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【单选题】
为了减轻磨损,通常对( )进行镀铬的表面处理方式。A.
第一道环
B.
所有气环
C.
油环
D.
气环和油环
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举一反三
【单选题】____ radar is to airplanes and ships, ______ eyes are to human's body.
A.
Such...as
B.
Just...as
C.
Such as...so
D.
Just as... so
【单选题】In restricted visibility the speed of a vessel without operational radar may be ________ enable effective avoiding action to be taken on sighting another ship．
A.
too low to
B.
too high to
C.
too high for
D.
too low for
【单选题】My radar is not working．I require shorebased radar assistance．Is shorebased radar assistance ________ ？
A.
used
B.
available
C.
in use
D.
can be used
【判断题】The welfare service in Britain only provides allowances and pensions for those jobless and retired people.
A.
正确
B.
错误
【单选题】_____ radar is to air plane and ships, _____ eyes are to human body.
A.
Such as…that
B.
Just like…to
C.
Such as…so
D.
Just as…so
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