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

一个办公室中的多台计算机、打印机可以通过（）连入集线器，组成局域网。

一个办公室中有多台计算机，每个计算机都配置有网卡，并已经购买有一台网络集线器和一台打印机，一般组成局域网通过的传输介质是（）。

口服补液及时纠正脱水，应用ORS，说法正确的是（）

已知表文件的表结构中有大学英语，高等数学，计算机基础和总分字段，且都是数值型，现要将所有同学的各门成绩汇总后存入到总分字段，使用命令（）

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。