单选题Safety shackles are fitted with（）.A a threaded boltB a round pin，with a cotter pinC a threaded bolt，locknuts，and cotter pinsD round pins and locknuts

An over-speed safety device is usually fitted to a generator engine for ___ in the event of over-speed.

A.stabilizing the ship speed

B.increasing the fuel pump setting

C.braking the crankshaft

D.cutting power off the engine

Safety shackles are fitted with ______．

A.a threaded bolt

B.a round pin，with a cotter pin

C.a threaded bolt，locknuts，and cotter pins

D.round pins and locknuts

安全帽

A.safety belt/harness

B.safety cap

C.safety cloches

D.safety measure

Frapping lines are fitted to lifeboat davits to ______.

A.secure the lifeboat in the davits when in the stowed position

B.bring the life boat close along the rail in the embarkation position

C.give the occupants a safety line when the boat is being lowered from the embarkation level

D.reduce the swinging of the lifeboat at the embarkation level

Which certificate is always issued by the China Classification Society？ ______.

A.Loadline certificate

B.Safety equipment certificate

C.Safety construction certificate

D.Safety cargo gear certificate

What is acceptable flame screening ________．

A.A fitted single brass screen of 10 x 10 mesh

B.A fitted stainless steel screen of 30 x 30 mesh

C.A fitted single stainless steel screen of 15 x 15 mesh

D.Two fitted brass screens of 10 x 15 mesh spaced 1/2 inch apart

You must________your cabe from 6 shackles to 3 shackles.

A.cut

B.pay out

C.slack

D.shorten