Wouldyouplease()themooringlines?
A. adjusted
B. adjusting
C. adjust
D. adjusts
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Tellhimtocometothebridge,themasteris(等待)()him.
A. expecting
B. looking
C. receiving
D. awaiting
Pleasetelltheduty()(一水)tolowerthegangway.
A. OS
B. AB
C. AorB
D. A+B
Thesternlineis()(紧的).
A. tight
B. high
C. slack
D. low
PSTN电话网的工作方式是()。
A. 无连接
B. 面向连接
C. 永久连接
D. 虚连接