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【单选题】
题干: 在IMO采纳的分道通航制水域内,操纵能力受到限制的船舶在执行某项作业所必须的限度内可免受分道通航制条款的约束,该项作业不包括:A.
从事清除水雷作业
B.
从事疏浚作业
C.
在航中从事转运人员
D.
维护海底电缆作业
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举一反三
【单选题】There must be many people ______ for the train at the train station because of the snow.
A.
wait
B.
waited
C.
to wait
D.
waiting
【单选题】I ______ the train but I overslept that morning.
A.
could catch
B.
might catch
C.
must have caught
D.
could have caught
【简答题】典型无线传感器网络传输层协议-PSFQ为了保证网络的可靠性,采用了三种机制来确保数据的可靠传输,分别描述一下? {
【单选题】8The train must be running late; we should have got to Beijing _______.
A.
by now
B.
all the way
C.
all the time
D.
over time
【单选题】We must run ______ we will miss the first train. [ ]
A.
so
B.
though
C.
otherwise
D.
but
【单选题】They ______ the train to Beijing．Otherwise, they would have returned home．
A.
need have caught
B.
must have caught
C.
must catch
D.
may catch
【单选题】We must ______ early in the morning so as to catch the first train.
A.
set up
B.
set out
C.
set about
D.
set aside
【单选题】My newly-purchased magazine is nowhere to be found. ____ I left it on the train? [ ]
A.
Must
B.
Should
C.
Would
D.
Could
【单选题】There must be many people ________ for their trains at the train station because of the golden week holiday.
A.
are waiting
B.
waited
C.
to wait
D.
waiting
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