你可能感興趣的試題

The term PROLONGED BLAST refers to（）.

A.a blast of from five to seven seconds' duration
B.a blast of from five to six seconds' duration
C.a blast of from four to six seconds' duration
D.a blast of from six to seven seconds' duration

單項(xiàng)選擇題

The ship will be（）demurrage soon.

A.at
B.for
C.in
D.on