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【单选题】
Though dress may be, ______ some extent, helpful in judging a person, that alone will not be sufficient.A.
for
B.
to
C.
in
D.
by
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反馈参考答案：
举一反三
【单选题】The fresh air coming in through the inner air ports, is compressed by _____ to a higher pressure.
A.
the cylinder head
B.
the cross-head
C.
the moving piston
D.
the stationary piston
【单选题】Under normal conditions, the quantity of air circulation becomes less and lessWhat is the reason?
A.
dirty delivery ducts
B.
too much refrigerant
C.
the fouling filters
D.
high temperature outside
【单选题】Higher than normal temperature air passing through the intake of a diesel engine will result in________.
A.
greater overall efficiency
B.
greater fuel economy
C.
lower horsepower
D.
lower compression ratio
【单选题】如果将“微调偏移”的数值改为1mm,代表的含义是 如
A.
当鼠标移动图形时，每次移动的距离为1mm
B.
当使用鼠标移动图形时，如果靠近另一个图形距离小于或等于1mm，将自动捕捉
C.
当使用方向键移动图形时，每次移动的距离为1mm
D.
当按下数值增加或减少的黑色小三角时，增加或减少的数值为1mm
【单选题】Which of the following problems can cause an above normal air temperature to develop in the intake manifold of a turbocharged and after-cooled diesel engine?
A.
Faulty turbocharger turbine diffuser ring
B.
Faulty turbocharger compressor ring
C.
Insufficient cooling water flow
D.
Clogged air intake filters
【单选题】Which of the following conditions can cause above normal air temperature to develop in the intake manifold of a four-stroke/cycle turbo-charged diesel engine?
A.
Clogged air intake falters
B.
Piston blow-by
C.
A defective after-cooler
D.
Faulty exhaust valves
【单选题】如果将“微调偏移”的数值改为1mm,代表的含义是:
A.
当鼠标移动图形时,每次移动的距离为1mm
B.
当使用鼠标移动图形时,如果靠近另一个图形距离小于或等于1mm,将自动捕捉
C.
当使用方向键移动图形时,每次移动的距离为1mm
D.
当按下数值增加或减少的黑色小三角时,增加或减少的数值为1mm
【单选题】Which of the following conditions can cause below normal air pressure in the intake manifold of a turbocharged diesel engine? .
A.
Excessive piston blow-by to the manifold
B.
Insufficient cooling water flow
C.
Accumulated water in the air boxes
D.
Clogged air intake filters
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