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單項選擇題

At（）an occasional survey has been carried out.

A.the remind of the master
B.the refer of the master
C.the render of the master
D.the request of the master

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單項選擇題

At that time my ship and others were（）within 40 degrees of the compass.

A.yawing
B.movin
C.turning
D.pitching

單項選擇題

Be careful（）mix the inflammable cargo with that kind.

A.do not
B.will not
C.shall not
D.not to

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