什么是柴油的低温流动性？_爱下问搜题

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问题问答题简答题

什么是柴油的低温流动性？

答案

参考答案：

柴油以凝固点、冷滤点等表示低温性能，它是保证柴油输送和过滤性能的指标。也叫低温流动性能。

单项选择题 A1/A2型题

急性腰扭伤最有价值的检查是（）。

A.腰部摄片

B.患者的步态改变

C.腰部压痛点

D.直腿抬高试验

E.骨盆挤压分离试验

完形填空

Weeks passed and the ___30_____over the coming Christmas grew into restlessness until the last day of ___31___before the holiday break. I smiled in ___32____as the last of them hurried out the door. Turning around I saw David ____33___standing by my desk.
“I have something for you,” he said and ___34___ from behind his back a small box. ____35___it to me, he said anxiously. “Open it.” I took the box from him, thanked him and slowly unwrapped it. I lift the lid and to my ___36___saw nothing. I looked at David’s smiling face and back into the box and said, “The box is nice, David, but it’s ___37____”.
“Oh no, it isn’t,” said David. “It’s full of love, my mum told me before she died that love was something you couldn’t see or touch unless you know it’s there.”
Tears filled my eyes ___38___I looked at the proud dirty face that I had rarely given ____39___to. After that Christmas, David and I became good friends and I never forgot the meaning ____40___the little empty box set on my desk..

C．inaccurately

D．inappropriately

B．expectation

C．appreciation