船长的基本职责应包括:()
Ⅰ防止超载、超员Ⅱ值班安排应防止船员疲劳操作Ⅲ防止水域污染Ⅳ自主选择船舶加油港
A.Ⅰ~Ⅲ
B.Ⅰ~Ⅳ
C.Ⅰ、Ⅱ、Ⅳ
D.Ⅱ、Ⅲ、Ⅳ
参考答案:A
—Danny, where would you like to go during your holiday?
—I want to visit _____ in China.[ ]
A.
B.
C.
D.
某地磁差资料为:磁差偏西0°30'(1989),年差+2'.0,则该地1999年的磁差为()。
A.0°50'E
B.0°50'W
C.0°10'E
D.0°10'W