根据下列材料，回答题
For the 26 month．mysterious falls of large chunks of ice(冰雹) 27 rained down on Spain and Italy．Juana Sanchez。a 70一year—old woman in Almeria，southern Spain，was knocked 28 when she was struck on the shoulder by a falling ice chunk 29 she walked in a street 30 her home．On January l2，just about 200 miles away in Seville，a man narrowly 3l serious injury when a 9-pound ball of ice32into his car．33 me evening of January 27 priests at the salesian monastery in L，Aquila，Italy were startled by．a loud crash． 34 the noise，the dlscovered a large chunk of ice on their yard，35 intact． Upon examination。the block of ice 36 in at 2 kilograms and no source 37．On the same day，about l00 miles northeast in Ancona,Italy，the local officials were called to investigate the report of a maIl 38 was struck
39 the head by a l kilogram chunk of ice that apparently fell from the sky．
spain and Italy area"the only European40 getting attacked by huge ice blocks in January On JaIluary 2 in Surrey，England(southwest of London)，an East Indian man was walkingthrough Newton Amletic Park when he41a strange whistling sound overhead．‘Seconds 42 ，a large hunk of ice fell out of the clear blue sky and pounded in‘to the soft ground，shattering over a 50 foot—wide area．The ice dug a hole of a foot deep and a foot in di锄eter． Even the shattered remnins of the mystery ice were as large as tennis balls and were described as opaque 43 no unusual color or smell．
Although eyewitnesses to the phenomenon report that they did not see anything in the sky that could account 44 the ice，scientists had to come up with a rationalization．Professor Jesus Mar tinez Frias，the geologist investigating the ice falls in Spain，told BBC News t}lat me ice Dieces had probably been 45through sudden temperature drops in the stratosphere．nlis was the most like1y explanation，he said，for the‘‘very unusual”phenomenon．
某股份公司2004年销售净利率为20%，总资产周转率0.7次。权益乘数1.71，净资产收益率为23.94%。2005年销售收入净额1014万元（其中赊销收入570万元），净利润253.5万元。该公司2005年末的财务报表如下：
资产负债表 单位：万元
根据以上情况，回答下列问题：
空气 物体表面 医护人员手
cfu/m3 cfu/m2 cfu/m2
Accounting is More Than Numbers
Accounting could date back to about 7,000 years ago. People of that time relied on old accounting methods to
record the growth of crops and herds. Accounting has greatly developed with the growth of joints tock companies .
When you think of accounting， you may find pages of tables and numbers. That image doesn’t usually give you too much excitement. When you have your ownbusiness， though， those numbers come to
mean the world to you because they give you the record of how much money you’ve earned or lost.
Actually， accounting is not simply about strange dollar amounts or boring numbers； they’re your sales figures， your costs， and your profits. In other words， accounting is alanguage of business.
Once you know how to work with those numbers， how to read those numbers and how to read the story they
tell， you will be able to manage your business toward greater success.
Accounting is More Than Numbers
Accounting could date back to about 7,000 years ago. People of that time relied on old accounting methods to
record the growth of crops and herds. Accounting has greatly developed with the growth of joints tock companies .
When you think of accounting， you may find pages of tables and numbers. That image doesn’t usually give you too much excitement. When you have your ownbusiness， though， those numbers come to
mean the world to you because they give you the record of how much money you’ve earned or lost.
Actually， accounting is not simply about strange dollar amounts or boring numbers； they’re your sales figures， your costs， and your profits. In other words， accounting is alanguage of business.
Once you know how to work with those numbers， how to read those numbers and how to read the story they
tell， you will be able to manage your business toward greater success.
Accounting is More Than Numbers
Accounting could date back to about 7,000 years ago. People of that time relied on old accounting methods to
record the growth of crops and herds. Accounting has greatly developed with the growth of joints tock companies .
When you think of accounting， you may find pages of tables and numbers. That image doesn’t usually give you too much excitement. When you have your ownbusiness， though， those numbers come to
mean the world to you because they give you the record of how much money you’ve earned or lost.
Actually， accounting is not simply about strange dollar amounts or boring numbers； they’re your sales figures， your costs， and your profits. In other words， accounting is alanguage of business.
Once you know how to work with those numbers， how to read those numbers and how to read the story they
tell， you will be able to manage your business toward greater success.
Accounting is More Than Numbers
Accounting could date back to about 7,000 years ago. People of that time relied on old accounting methods to
record the growth of crops and herds. Accounting has greatly developed with the growth of joints tock companies .
When you think of accounting， you may find pages of tables and numbers. That image doesn’t usually give you too much excitement. When you have your ownbusiness， though， those numbers come to
mean the world to you because they give you the record of how much money you’ve earned or lost.
Actually， accounting is not simply about strange dollar amounts or boring numbers； they’re your sales figures， your costs， and your profits. In other words， accounting is alanguage of business.
Once you know how to work with those numbers， how to read those numbers and how to read the story they
tell， you will be able to manage your business toward greater success.
Beads， stones， seashells， paper， precious metals such as gold and silver， base metals such as iron have
all been used as money. Today， money is printed on paper. A lot of countries use their own currency， with n
ames such as dollar， pound， franc， ruble， yuan and so on. Since 2002， 18 of the EU members have
replaced their national currencies by Euro notes and coins.
If you want to pay for something in another currency, you have to change your money into the other money.
If you want to travel outside your native country, you need to change your own country's money for the
money of the country you are visiting. Most large banks sell foreign currencies. You can exchange money
at a bank or at an office of a tourist agency Wherever you go, exchanging money puts you in touch with
international finance, which is concerned with exchange rates between different currencies. Deciding the
rate for the international exchange of money is one of the most complex aspects of international banking.
Beads， stones， seashells， paper， precious metals such as gold and silver， base metals such as iron have
all been used as money. Today， money is printed on paper. A lot of countries use their own currency， with n
ames such as dollar， pound， franc， ruble， yuan and so on. Since 2002， 18 of the EU members have
replaced their national currencies by Euro notes and coins.
If you want to pay for something in another currency, you have to change your money into the other money.
If you want to travel outside your native country, you need to change your own country's money for the
money of the country you are visiting. Most large banks sell foreign currencies. You can exchange money
at a bank or at an office of a tourist agency Wherever you go, exchanging money puts you in touch with
international finance, which is concerned with exchange rates between different currencies. Deciding the
rate for the international exchange of money is one of the most complex aspects of international banking.
Accounting is More Than Numbers
Accounting could date back to about 7,000 years ago. People of that time relied on old accounting methods to
record the growth of crops and herds. Accounting has greatly developed with the growth of joints tock companies .
When you think of accounting， you may find pages of tables and numbers. That image doesn’t usually give you too much excitement. When you have your ownbusiness， though， those numbers come to
mean the world to you because they give you the record of how much money you’ve earned or lost.
Actually， accounting is not simply about strange dollar amounts or boring numbers； they’re your sales figures， your costs， and your profits. In other words， accounting is alanguage of business.
Once you know how to work with those numbers， how to read those numbers and how to read the story they
tell， you will be able to manage your business toward greater success.
远程教育在中国的发展经历了三代。
第一代是 ；
第二代是 ；
第三代是 。
计算题：有一台直流发电机，电枢导体总数N=192，电枢转速n=750r／min，气隙磁通Ф=0.05 Wb，
试求：
（1）直流发电机的电枢电动势E。
（2）若保持Ф不变，转速减小为500 r／min，则E是多少？
（3）如果转速n不变，调节励磁电流，使磁通减小0.03 Wb，求E为多少。
某股份公司2004年销售净利率为20%，总资产周转率0.7次。权益乘数1.71，净资产收益率为23.94%。2005年销售收入净额1014万元（其中赊销收入570万元），净利润253.5万元。该公司2005年末的财务报表如下：
资产负债表 单位：万元
根据以上情况，回答下列问题：
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