單項選擇題Chafing gear（）.

A.reduces and prevents corrosion of standing rigging
B.prevents corrosion of running rigging
C.reduces and prevents wear caused by the rubbing of one object against another
D.protects the body against extreme cold


您可能感興趣的試卷

你可能感興趣的試題

1.單項選擇題Before welding in a tank that has carried petroleum products，the tank must be certified by （）.

A.the Coast Guard
B.the ABS
C.the shipyard fire department
D.a certified marine chemist

2.單項選擇題Before welding can be done in a tank that has carried petroleum products，a certificate must be obtained from（）.

A.the customs
B.the Register Bureau of shipping
C.the shipyard fire department
D.a certified gas chemist

4.單項選擇題At least one reinspection shall be made on each vessel holding a Certificate of Inspection valid for two years. This inspection shall be held between the tenth and fourteenth months of the duration period of the certificate and shall be（）.

A.at the discretion of the inspector，but in no greater detail than required for original certification
B.at the discretion of the inspector，but in no lesser detail than required for original certification
C.generally similar in scope to the inspection required for certification，but in less detail
D.equivalent to the inspection required for certification

5.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