單項(xiàng)選擇題The material used extensively as electrolytic protection around bronze propellers is（）.

A.brass
B.copper
C.lead
D.zinc


您可能感興趣的試卷

你可能感興趣的試題

1.單項(xiàng)選擇題The most important principle of the cargo stowage is（）.

A.to avoid the rearrangement of the cargo loaded on board
B.to ensure the safety of the ship and cargo
C.to reject the damaged cargo during loading operation
D.to prevent the spontaneous combustion of coal and grain

2.單項(xiàng)選擇題The most important principle in the stowage is（）.

A.to ensure the safety of the ship and protect the cargo from being damaged
B.to avoid the rearrangement of the cargo loaded on board
C.to reject the damaged cargo during loading
D.to prevent the spontaneous combustion of coal and grain

3.單項(xiàng)選擇題The most variable factor in the control of broken stowage is（）.

A.the use of excessive amounts of dunnage
B.the use of excessive amount of filler cargo
C.the failure to stow some item in neat and uniform rows and tiers
D.the skill, industry and interest of the longshoremen

4.單項(xiàng)選擇題The net productivity per gang-hour can be improved through a decrease of（）.

A.cranes/derricks
B.crane/derrick cycles
C.crane/derrick cycle time
D.weight per package

5.單項(xiàng)選擇題The patches where rust have been removed should be wiped clean before paint is（）.

A.applied
B.supplied
C.replied
D.complied