滚珠丝杆螺纹副采用预紧力消除轴向间隙，其预紧力越大越好。

塑性指数越大，黏土的塑性变化范围越大，黏土的塑性越好，黏性越大。

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。

为什么要设置汽机轴封系统，其系统功能是什么？

路拱越大，路面横坡越大，也就更利于排水，所以路拱越大越好。

焊件的装配间隙越大，焊缝的（）就越大，焊后的残余变形就越大。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。