你可能喜欢
单项选择题
A.lower than
B.higher than
C.below
D.equal to
单项选择题
A.fire-tubes
B.furnaces
C.down-comers
D.soot-blowers
单项选择题
A.The domestic water
B.Bilge water
C.Oil transfer
D.The ballast
单项选择题
A.A cut-off lever
B.A swivel block
C.A cross-head
D.A driving gear
单项选择题
A.the piston rod
B.the tiller arm
C.the connecting rod
D.the rudder
单项选择题
A.fouled tubes in shell and tube condenser
B.too little or too warm condenser water
C.air or non-condensable gas in system
D.overcharge of refrigerant
单项选择题
A.The winch motor
B.The band brake
C.The winch barrel
D.The anchor capstan
单项选择题
A.The cable lifter
B.The hoisting motor
C.The topping wire
D.The life-raft
单项选择题
A.stays
B.winches
C.barrels
D.brakes
单项选择题
A.fire-tubes
B.furnaces
C.water drums
D.water wall tubes