單項(xiàng)選擇題

Ullages on tankers are measured from（）.

A.an above-deck datum such as the top of the ullage pipe
B.the tank ceiling aboard transversely framed vessels
C.the tank top
D.a thievage mark below the edge of the deck

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單項(xiàng)選擇題

Ullages are measured from（）.

A.the tank ceiling
B.the tank top bushing
C.the thievage mark
D.an above deck datum

單項(xiàng)選擇題

Ullage measurements are taken from the top of the liquid to（）.

A.the base of the expansion trunk
B.the base of the ullage port
C.a line scribed within the ullage port
D.an above-deck datum，usually the top of the ullage hole