汽轮机组参与调峰运行，由于负荷变动和启停频繁，机组要经常承受温度和压力的变化，（）了机组的使用寿命。

提高机组进汽压力和温度，即能提高机组的作功能力，也能提高机组的效率。

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（）.

除（）外，可再生能源发电机组不参与上网竞价。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

成为跨境电商人必须具备的素质有以下哪些？（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。