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A combination of corrosion and erosion caused wastage in the main ballast line，which directly led to the leak ______．
A.draff
B.wastage
C.mullock
D.obsolete
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更多 “ A combination of corrosion and erosion caused wastage in the main ballast line，which directly led to the leak ______．A.draffB.wastageC.mullockD.obsolete ” 相关考题
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Which is the earliest line in the following code after which the object created on the line marked （0） will be a candidate for being garbage collected， assuming no compiler optimizations are done？ （） public class Q76a9 { static String f（） { String a = "hello"； String b = "bye"； // （0） String c = b + "!"； // （1） String d = b； b = a； // （2） d = a； // （3） return c； // （4） } public static void main（String args[]） { String msg = f（）； System.out.println（msg）； // （5） } } A、The line marked （1）.B、The line marked （2）.C、The line marked （3）.D、The line marked （4）.E、The line marked （5）.
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单选题The main engine is cooled with fresh water （）is added suitable small quantities of chemicals to prevent corrosion.A
in whichB
on whichC
to whichD
by which
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increasing the permeability of the pumproomB
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单选题Exhaust valve grooving and corrosion is caused by certain components of residual fuel oilThese components are sodium, sulfur, and （）.A
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carbonC
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ash
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单选题If an auxiliary diesel engine temperature is higher than normal ,but the thermostat is determined not to be defective you would suspect a /an （）A
cavitation erosion in the water jacketsB
excess corrosion inhibitor in the coolantC
dirty jacket water coolerD
defective turbocharger
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单选题The boiler water alkalinity in a coil-type auxiliary boiler should be maintained at the pH recommended by the boiler manufacturer to（）A
precipitate silica from solutionB
reduce corrosion in the heating coilC
prevent clogging and erosion in the coilD
maintain zero water hardness
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单选题Which is the earliest line in the following code after which the object created on the line marked （0） will be a candidate for being garbage collected， assuming no compiler optimizations are done？ （） public class Q76a9 { static String f（） { String a = "hello"； String b = "bye"； // （0） String c = b + "!"； // （1） String d = b； b = a； // （2） d = a； // （3） return c； // （4） } public static void main（String args[]） { String msg = f（）； System.out.println（msg）； // （5） } }A
The line marked （1）.B
The line marked （2）.C
The line marked （3）.D
The line marked （4）.E
The line marked （5）.
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a sea water chestB
a change-over chestC
a buffer tankD
a three-way valve
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promote refrigerant dehydrationB
be absorbed in the receiverC
cause low condensing pressureD
carry moisture and lead to corrosion
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单选题Which measure should NOT be taken to reduce the pounding of a vessel in a head sea?（）A
Add ballast in the afterpeakB
Add ballast forwardC
Alter courseD
Reduce speed
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