單項選擇題

Atmospheres laden with coal dust or grain dust caused by loading these cargoes（）.

A.require loading operations to be shut down until the atmosphere clears
B.are toxic to human life
C.are subject to spontaneous combustion
D.may be explosive in some concentrations

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單項選擇題

A venetian vent or rice ventilator is used in stowage of which cargo?（）.

A.Bagged cargo
B.Bulk grain
C.Bulk rice
D.Refrigerated goods

單項選擇題

A grapnel is a（）.

A.device for securing a chain topping lift
B.hook to prevent the anchor cable from slipping
C.device used to drag for a submerged cable or line
D.type of clam bucket used for discharging bulk cargo

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Atmospheres laden with coal dust or grain dust caused by loading these cargoes（）.

你可能感興趣的試題

A venetian vent or rice ventilator is used in stowage of which cargo?（）.

A grapnel is a（）.

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