船舶离开码头前，监护队（科）派员登轮核查情况，收回《船员登陆证》（出港船舶除外），监护船舶离开码头。
参考答案：对
The answers your questions watching television were also interesting.
A．to; to
B．about,; about
C．about; to
D．to ; about
在机械作用下，炸药发生爆炸的首要条件是（）。
