He told me that by the end of this month ______ in this company for 10 years.
A. will have been working
B. would have been working
C. will work
D. would work
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目前海船上普遍使用的锚是________。
A.海军锚
B.马氏锚
C.霍尔锚
D.丹福锚
远洋船上不再使用的锚是________。
A.有杆锚
B.无杆锚
C.大抓力锚
D.AC-4型锚
霍尔锚的抓力系数一般取________。
A.2~4
B.3~5
C.4~6
D.3~4
山字锚的优点是________。①便于收藏;②抛起方便;③抓力大;④普遍使用。
A.①③④
B.②③④
C.①②③④
D.①②