Defense plans may cause the operation of electronic aids to navigation to be suspended with ().
A . no notice
B . one day's notice
C . a week's notice
D . thirty (30) days notice
相似题目
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如果汇票上付款期限是:At 90 days from 20th May该汇票的付款到期日是()。
A . 17
Aug
B . 18
Aug
C . 19
Aug
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Waterside scale in a fire-tube boiler may cause ().
A . increased heat transfer
B . fireside erosion
C . high steam demand
D . overheated tube
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A virtual rise in the center of gravity may be caused by().
A . filling a partially filled tank
B . using an on board crane to lift a freely swinging heavy object
C . emptying a partially filled tank
D . transferring ballast from the forepeak to the after peak
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In a refrigeration system, foaming of the crankcase oil may cause the ().
A . expansion valve to overfeed
B . compressor to knock
C . water regulating valve to fail
D . crankcase drains to plug
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The reciprocating pump can’t draw water from a tank may be caused by ().
A . leaky pipe
B . opened inlet valve
C . too much water in tank
D . None of the above
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In the common rail system, excessive pressure in the header may be caused by ()
A . improper adjustment of the bypass valve
B . a dribble in the fuel injection nozzle
C . insufficient leak-off through injection nozzle packing
D . a malfunctioning injection nozzle
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Electrical failures in motors are caused by the breakdown of insulation, which may be caused by ()
A . penetration of moisture
B . accumulation of dirt
C . overheating
D . All of the above
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If the refrigeration compressor crankcase is sweating, the cause may be due to ().
A . a shortage of refrigerant
B . the compressor running continuously
C . liquid refrigerant returning to the compressor
D . the compressor short cycling on the high pressure cutout
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May I have a copy of the cargo plan?Certainly,here().
A . is it
B . are you
C . they are
D . you are
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If an auxiliary diesel engine frequently stalls, the trouble may be caused by ()
A . low exhaust back pressure
B . air in the fuel system
C . gasket blow-by or leakage
D . incorrect assembly of idler spring
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Excessive vibration in an operating diesel generator may be caused by ()
A . electrical overload
B . surging at governed RPM
C . loose engine mounting bolts
D . coolant leaking into the cylinder
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A water pump can not supply water after startingIt may be caused by ().
A . closed discharge valve
B . broken pipe line
C . worn shaft
D . both A and B
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In the Northern hemisphere northerly winds may cause temperature().
A . falling
B . rising
C . constant
D . same
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If a hydraulic pump is overheating, the cause may be ().
A、excessive internal leakage in the pump
B、low discharge pressure and fluid flow
C、excessive fluid level in the hydraulic reservoir
D、operation of the pump at 100% efficiency
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A pressure drop in the liquid line of a refrigeration system may cause()
A . the solenoid valve to seize
B . the compressor to hunt
C . flash gas to form in the liquid line
D . the expansion valve to freeze ope
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Changes in job design may include: job sharing, rings of defense, bumping, and job relocation.
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The plan calls for a __________ defense than the one we currently have.
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What may be the cause of “I got in trouble.”?
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What is edible in one culture may be considered _____ in another culture and this may cause culture shock.
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Sales promotion may cause customers’ anxiety and distrust. ( )
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Both rogue and underactive neurons may cause troubles.
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Worse, chronic exposure to stress over a long time may cause more serious diseases and may actually shorten your life
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Malnutrition may be caused by ________()
A.a poor environment
B.unwise food selections
C.under-nutrition
D.both B and C
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If employment planning shows a large surplus of employees, management may want to__()
A.recruit
B.downsize
C.expand
D.continue with current employment levels