更多"When the density of water is 1000,i"的相关试题:
[单项选择]You may find the time of slack water after low water in a certain port from（）.
A. Deadweight Scale
B. Tide Tables
C. Notices to Mariners
D. Table of Azimuth
[单项选择]When is the density of the water required to be logged in the logbook of a ship?（）
A. Any time the vessel moves from water of one density into waters of a different density
B. Prior to getting underway when the vessel is floating in fresh or brackish water
C. Only when the vessel moves from fresh water into salt water
D. The density of the water is not required to be logged in the unofficial logbook
[单项选择]The fresh water generator produces fresh water （）.
A. by cooling sea water
B. by heating sea water
C. by evaporation of sea water
D. by purifying sea water
[单项选择]Prior to getting underway in fresh or brackish water，the Master must（）.
A. log the density of the water
B. secure all overboard discharges
C. take on fresh water ballast
D. clean the sides with fresh water
[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]（） water is more expensive than fresh water It has high specific heat and low viscosity.
A. Distilled
B. Distilling
C. Boiling
D. Boiled
[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]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 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]Allowance for fresh water for all freeboards other than timber 25mm. This wording is likely to appear in （）.
A. INTERNATIONAL LOADLINE CERTIFICATE
B. PASSENGER SHIP SAFETY CERTIFICATE
C. CARGO SHIP SAFETY CONSTRUCTION CERTIFICATE
D. GENERAL DECLARATION
[单项选择]The domestic fresh water pump starters are controlled by pressure switches which operate when the pressure in the tank varies within predetermined limits as water is drawn offThe word “which” means （）.
A. starters
B. pressure switches
C. pressure
D. water
[单项选择]If oil density were greater than water’s, the oil separator （）.
A. did work
B. would work well
C. didnt work
D. wouldnt work
[单项选择]Allowance for fresh water refers to（）.
A. the provision to be provided when the vessel sails in fresh water area
B. the fresh water to be carried by a vessel
C. the allowance of fresh water for each crew member when in distress at sea
D. the amount of free board decreased when sailing in fresh water area
[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 a clarifier is running the impurities and water collect at the bowl （）.
A. center
B. periphery
C. inlet
D. upper parts
[单项选择]Fresh water is used for the cooling of cylinder jackets and （） of the marine diesel engine.
A. cylinder covers
B. lubricating space
C. crosshead
D. exhaust manifold
