虎钳的（）要经常加油，保持良好润滑。

国家实行带薪年休假制度，凡是享受年休假待遇的矿井泵工，必须连续工作满（）年。

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.

文明施工是指施工现场要保持良好的作业环境、卫生环境和（　）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

冷凝工段泵工岗位有哪些技术规定？

矿井泵工每班都巡回检查，检查时间为（）小时/次。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。