一棵树上的根寿命的最短是（）。

一棵树上的根，寿命由长至短的顺序大致是：（）。

离心泵填料寿命过短的原因是由于（）。

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。

试题20在Access中为窗体上的控件设置Tab键是的顺序，应选择“属性”对话框的（）

表达式(8+3＞36.OR..T..AND.“A”-“B”$“ABC”)的运算顺序是______。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。