脚手架的永久荷载，在进行强度换算时，应乘以（）的分项系数。

材料定额成本应该等于（）乘以单位产品材料消耗定额，再乘以计划单价。

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。

天体方位等于90°NW，换算成圆周方位等于（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

销售额等于访客乘以转化率乘以客单价。（）