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【判断题】
金属指示剂是指示金属离子浓度变化的指示剂。A.
正确
B.
错误
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举一反三
【单选题】If diesel oil in this tank is used, the _____ of the oil must not exceed 120 degree F.
A.
viscosity
B.
flash point
C.
acid value
D.
temperature
【单选题】In an auxiliary diesel engine bypass type lubricating oil system, the main lube oil pump forces_______ .
A.
all of the oil used by the engine through a filter
B.
some of the oil used by the engine through a filter
C.
some of the oil used by the engine through a centrifuge
D.
all of the oil used by the engine through a centrifuge
【单选题】The Wilmington Oil Field, in Long Beach, California, is one of the ______oil fields in the continental United States.
A.
productive
B.
the most productive
C.
most are productive
D.
productivity
【单选题】The oil components including polar compounds formed as a result of oxidation of some oil fractions in the marine environment dissolving in seawater defines ______．
A.
Oxidation and destruction
B.
Dissolution
C.
Oxidation and destruction
D.
Sedimentation
【简答题】单片机主要应用在哪些领域?
【单选题】圆柱体的轴线垂直于H面，则圆柱面对V面的转向轮廓线是（ ）
A.
柱面上最左和最右的两条线素
B.
柱面上最前和最后的两条线素
C.
以上两种情况都对
D.
以上两种情况都不对
【简答题】To make chips, you cut up potatoes, put them in oil and do this. f. ______
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