半数有效量是（） -题库考试答案搜索网

半数有效量是（）

单选题

2021-09-01 17:48

A、刚能引起药理效应的剂量
B、引起等效反应的相对剂量
C、安全用药的最大剂量
D、临床常用的有效剂量
E、引起50％最大效应的剂量

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正确答案

E

试题解析

标签：总论中西医结合内科主治医师

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翻译：With Average or With Particular Average（WA or WPA）（）

治疗指数为药物的安全性，是半数致死量（LD50）与半数有效量（ED50）的比值。

（）shall be liable for loss of and damage to the Vessel and／or goods arising or resulting from inaccuracies in stating the description，quantity，weight，measurement or contents.

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

（）, or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.

A salvor may be（）the whole or part of the payment due under Salvage Convention to the extent that the salvage operations have become necessary or more difficult because of fault or neglect on his part or if the salvor has been guilty of fraud or other dishonest conduct.

The （） is used for hauling in or letting out the wires or ropes.

Vessels must be（）valid certificate of nationality or certificated of registry or license.

When loading or discharging dry mud or cement，crew members should use goggles and（）.

Effects which are dutiable or subject to prohibitions or restrictions should be declared in （）.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

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