主频是计算机的重要指标，运行速度也是计算机的重要指标，它们的单位分别是 ________。

计算机的运行速度也是计算机的重要指标，它的单位是______。

已知X=21，Y=15，Z=22，计算表达式（（X>Y）or（Y>Z））and（（X<><>

口服补液及时纠正脱水，应用ORS，说法正确的是（）

如果字符串s1="计算机"，s2="应用基础"，若想得到字符串"计算机应用基础"，应该执行的命令是（）。

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.

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.

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。