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單項選擇題

Medium survey should be carried out （） times during the valid period of the certificate.

A.2
B.3
C.4
D.1

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單項選擇題

The first survey has two situations, one is changing （） survey, the another is making survey.

A.registry
B.ship hull
C.nationality
D.replacing machineries and electric devices

單項選擇題

In the first survey, （） compiles the survey report and fills in certificate.

A.surveyor
B.chief engineer
C.captain
D.chief mate

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