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【简答题】
在镀银染色的标本中,神经元胞体内可见 ,被染成黑色,相互交织成网,电镜下是由 和 聚集而成,除具有 作用外,还与 、 及 的运输有关。
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【简答题】What can be used to handle an oil spill?
【简答题】What can be used to clean up spilt oil in the of an oil spill?
【简答题】Crude oil must be and then can be used.
【单选题】Which of the listed conditions can be used to determine if lube oil has been diluted by fuel? .
A.
Viscosity is decreased
B.
Octane number is altered
C.
Pump speed is decreased
D.
Blower’s speed is decreased
【单选题】Satellite tracking and remote communication systems can be used to
A.
reduce oil consumption.
B.
remove the obstacles on the road.
C.
call for help when one's car crashes.
D.
help drivers get out of a traffic jam.
【单选题】A lube oil filter can be used to remove most contaminants from lube oil. A contaminant which will remain in the lube oil after filtering is ____.
A.
acid
B.
fuel oil
C.
sediment
D.
water
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