更多"When the water produced from most e"的相关试题:
[单项选择]The most effective method in removing water from diesel fuel oil is by（）
A. centrifuging the fuel
B. using it in the engine
C. heating the fuel tanks
D. starting the fuel
[单项选择]A centrifugal pump may fail to deliver water when first started if the （）.
A. water seal pipe is plugged
B. pump is not primed
C. seal ring is improperly located
D. impeller is flooded
[单项选择]When a tornado moves over the water from land it is called a（）.
A. Tornado
B. Waterspout
C. Hurricane
D. Cyclone
[单项选择]If you have to jump in the water when abandoning a vessel，your legs should be（）.
A. spread apart as far as possible
B. held as tightly against your chest as possible
C. in a kneeling position
D. extended straight down and crossed at the ankles
[单项选择]For the deepest water when rounding a bend in a river，you should navigate your vessel（）.
A. toward the inside of the bend
B. toward the outside of the bend
C. toward the center of the river just before the bend，then change course for the river's center after the bend
D. in the river's center
[单项选择]When（）clean ballast water from any vessel，an application shall be made to Harbor Authorities for approval.
A. discharging
B. recircling
C. loading
D. taking in
[单项选择]Only children under five are excepted from this survey.（）
A. 这次调查仅仅不包括五岁以下的儿童。
B. 只有不满五岁的儿童不在此次调查范围之内。
C. 五岁以上的孩子都在此次调查范围之外。
D. 这次调查只包括五岁以上的孩子。
[单项选择]The movement of water away from the shore or downstream is called a(n)（）.
A. reversing current
B. ebb current
C. flood current
D. slack current
[单项选择]Water fog from an all-purpose nozzle may be used to（）.
A. fight an electrical fire
B. fight a magnesium fire
C. eliminate smoke from a compartment
D. All of the above
[单项选择]When distilling salt water the cooling water discharging from the distiller is fed back to evaporator as feed water （）.
A. to cut down the amount of cooling water needed
B. to prevent an excess amount of cooling water from being discharged to the bilges
C. to supply hot water to the evaporator for more economical operation
D. None of the above is tree
[单项选择]When distilling sea water the cooling water discharging from the distiller is fed back to evaporator as feed water （）.
A. to decrease scale formation
B. for better cooling effect
C. for more economical purpose
D. to raise vacuum
[单项选择]The oil （） in the discharging water from oil water separator exceeds 15 PPM without alarm, because the coil was burnt out.
A. filter
B. hole
C. pollution
D. content
[单项选择]（） is the production of pure water from sea water by evaporation and re-condensing.
A. Evaporation
B. Circulation
C. Condensation
D. Distillation
[单项选择]We use （） to distill fresh water from sea water.
A. engine
B. sea water pump
C. cylinder cooler
D. fresh water generator
[单项选择]If in doubt as to the true water level when a boiler is being oil-fired, you should （）.
A. take no measures
B. extinguish the fire as soon as possible
C. feed water to the boiler
D. open the blow down valve
[单项选择]Distilled water from an evaporator may be discharged into a potable water tank （）.
A. through a detachable hose connection
B. after passing through an activated charcoal filter
C. after chemical analysis shows it is fit for consumption
D. through a solenoid operated three-way valve
[单项选择]Securing cargo by running timbers from an upper support down to the cargo，either vertically or at an angle，is called（）.
A. braces
B. dunnage
C. shores
D. toms
[单项选择]When is the most critical time of bunkering in regards to oil pollution?（）
A. lining up the systems
B. topping off
C. starting delivery
D. connecting hoses and joints
