單項(xiàng)選擇題

Argon is classified as a（）.

A.corrosive
B.flammable gas
C.flammable liquid
D.nonflammable gas

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單項(xiàng)選擇題

As a general rule, tally clerks should make their tallying（）.

A.in waerhouses
B.on deck
C.ashore
D.in the tallyroom

單項(xiàng)選擇題

As the displacement of a vessel increases, the detrimental effect of free surface（）.

A.increases
B.decreases
C.remains the same
D.may increase or decrease depending on the fineness of the vessel's form