单项选择题
Open the bilge well cover. ()
A.关上压载水盖。 B.关上污水井盖。 C.打开污水井盖。 D.打开压载水盖。
单项选择题 There is a fishing boat in front of our ship.()
单项选择题 The pressure of the hose is too low.()
单项选择题 There are too much garbage in the hold.()