8051单片机中，输入/输出引脚中用于专门的第二功能的引脚是（）。

80C51单片机访问片外存储器时，利用（）信号锁存来自（）口的低8位地址信号。

由设置寄存器（）来选择P1口的引脚功能。

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

机电一体化产品是指采用机电一体化技术，在（）基础上创造出来的新机电产品。

8051单片机中，输入/输出引脚中用于专门的第二功能的引脚是 。

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.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

选择题2:在教学过程中,为了方便熟记单片机的引脚功能,常将单片机的引脚分类,下面分类正确的是:

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。