In extreme weather conditions, either hot or cold, control of the air conditioning plant presents （） difficulties.

核热点因子 nuclear hot spot factor

In extreme weather conditions, either hot or cold, control of the air conditioning plant presents （） difficulties.

重组热点（hot spots of recombination）

热点因子 hot spot factor

突变热点（hot spots of mutation）

工程热点因子 engineering hot point factor

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（）.

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.

Vessels must be（）valid certificate of nationality or certificated of registry or license.

African Americans stopped using chemical straighteners or hot irons because ______.

If the scavenge fire is of a more major nature, if there is a risk of the fire extending or if the scavenge trunk is adjacent to the crankcase with risk of a hot spot developing it sometimes becomes necessary to （）the engine.