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.

When loading or discharging dry mud or cement，crew members should use goggles and（）.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

工人阶级的同盟军中最可靠的是（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

在中国民主革命中，无产阶级的可靠的同盟军包括（）。

在中国革命中，无产阶级最可靠的同盟军是（ ）A．民族资产阶级B．城市小资产阶级C．农民阶级D．革命知

中国革命主力军和无产阶级最可靠的同盟军是（）