题目内容
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[主观题]
Chemical resistance will decrease in plastics as temperature increase.
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A.history
B.territory
C.resistance
D.memory
Acrylonitrile-butadiene rubber (NBR) and Fluoroelastomers have excellent resistance to oil, kerosene, and gasoline.
Which of the following polymers with little water-absorption resistance?
A.high-density polyethylene B.nylon 6/6
C.fluorocarbons D.polyester
APC抵抗(resistance to activated protein C,APCR)
A.contracts
B.activates
C.maintains
D.prescribe
A.depression
B.barricade
C.resistance
D.friction