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【单选题】
UM71型无绝缘轨道电路自动闭塞，轨道继电器N.S1？24？0？4的最小落下电流为（）A.
10mA
B.
20mA
C.
30mA
D.
40mA
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举一反三
【单选题】If we had been informed in time, we the goods for you.
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reserve
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【单选题】If we had been informed in time, we the goods for you.
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would have reserved
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D.
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【单选题】If we had been informed in time, we ______ them for you.
A.
would have reserved
B.
would reserve
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D.
had reserved
【单选题】What is the use of the books of Admiralty List of Lights and Fog Signals? Their use is to ______
A.
mention signal stations and ice, storm, traffic and port signals
B.
give the international numbers of lights
C.
give the correction of the lights and fog signals
D.
give the information on the lights and fog signals
【单选题】If we had been informed in time, we the goods for you.
A.
will reserve
B.
will have reserved
C.
reserve
D.
would have reserved
【单选题】7 Poor schooling was the root of the unemployment problem,
A.
base
B.
result
C.
cause
D.
force
【单选题】If we had been informed in time, we the goods for you.
A.
will have reserved
B.
will reserve
C.
reserve
D.
would have reserved
【单选题】If we had been informed in time, we the goods for you.
A.
will have reserved
B.
reserve
C.
will reserve
D.
would have reserved
【单选题】If we had been informed in time, we ____ them for you.
A.
reserve
B.
will reserve
C.
would have reserved
D.
will have reserved
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