A. These hatches are usually driven by electric or hydraulic power.
B. These hatch covers are usually driven by electric or hydraulic power.
C. These hatch covers are usually driven by electric.
D. These hatch covers are usually driven by hydraulic power.
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A. There are several types of hatch covers on board ship.
B. There are several types of hatches on board ship.
C. There is one type of hatches on board ship.
D. There is one type of hatch covers on board ship.
A. The work of opening and closing hatches is usually done by crew members.
B. The work of opening and closing hatch covers is usually done by crew members.
C. The work of opening hatch covers is usually done by crew members.
D. The work of closing hatch covers is usually done by crew members.
A. After loading and discharging, hatch covers will be opened.
B. After loading and discharging, hatch covers will be closed.
C. Before loading and discharging, hatch covers will be opened.
D. Before loading and discharging, hatch covers will be closed.
A. the guide rail
B. the guide rope
C. the side coaming
D. the guide roller
A.why
B.when
C.how
D.what
A. the open valve
B. the stop valve
C. the steam valve
D. the close valve
A. monthly
B. every three months
C. once monthly
D. every two months
A.foreman
B.operator
C.opener
D.stevedore
A. The cargo runner
B. The cargo block
C. The derrick sling
D. The lashing wire
A.gangway
B.bow
C.boiler
D.stern
最新试题
Lifting capacities of derricks vary from three to ten tons. （）
HANDLE WITH CARE（）
Tell your stevedores to handle with care the fragile cargo.（）
We are loading dangerous cargo now.（）
Please close all the hatches.（）
The jumbo boom can lift heavy cargo, the gantry crane can hoist containers.（）
Liquid bulk cargo is loaded and discharged by pumps.（）
The safe working load of the derrick is 5 tons.（）
STOW AWAY FROM BOILER（）
NO HOOK（）