单项选择题

Proper use shall be made（）radar equipment.

A.with
B.to
C.for
D.of

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单项选择题
No assumptions（）on the basis of scanty information，especially scanty radar information.

A.should not be made
B.are not to be taken
C.should be taken
D.shall be made
单项选择题
My radar is not working.I require shore based radar assistance.Is shore based radar assistance（）?

A.used
B.available
C.in use
D.can be used
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