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【简答题】
具有一定的韧性和较高的耐磨性，同时又具有良好的铸造性能和导热性，在生产中主要用于生产汽缸盖、汽缸套、钢锭模和液压阀的是（ ）。
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举一反三
【单选题】Our ship（）with many modern navigational instruments.
A.
equipped
B.
is equipped
C.
equips
D.
has equipped
【单选题】— Do you mind if I open the window? — ______ . I feel a bit cold. [ ]
A.
Of course not
B.
I'd rather you didn't
C.
Go ahead
D.
Please close it
【单选题】There are many navigational aids（）.
A.
in chief engineer's room
B.
in chief officer's room
C.
on the bridge
D.
on deck
【单选题】Many navigational warnings are of a temporary nature，but others remain in force for several months or may be succeeded by ______.
A.
Notices to Mariners
B.
Sailing Directions
C.
List of Lights and Signals
D.
Guide to Port Entries
【单选题】--- Do you mind if I turn on the air-conditioner? ---___________. I feel a bit hot.
A.
You’d better not
B.
Go ahead
C.
I’d rather you didn’t
D.
Of course
【单选题】Our ship________with many modem navigational instruments.
A.
equipped
B.
is equipped
C.
equips
D.
has equipped
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