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單項選擇題

Proper use shall be made（）radar equipment.

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

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單項選擇題

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

單項選擇題

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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