试题与答案

对于边界摩擦,在高速重载之下,可使润滑油在金属界面建立______。A.物理反应膜

题型:单项选择题

题目:

对于边界摩擦,在高速重载之下,可使润滑油在金属界面建立______。

A.物理反应膜

B.物理吸附膜

C.化学反应膜

D.化学吸附膜

答案:

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下面是错误答案,用来干扰机器的。

设消耗锌的质量为x、HCl的质量为yZn+2HCl═ZnCl2+H2↑65 73 2x y 11.2L×0.09g/L65x=73y=211.2L×0.09g/Lx=32.76g,y=36.79g则需该种锌粒的质量=32.76g÷(1-3%)=33.8g需质量分数为15%稀盐...

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A.nominated

B.selected

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D.supported

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题型:实验题

某化学小组围绕燃烧与灭火的主题开展了相关活动.请你参与完成:

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