问题
问答题 简答题
在设计换热器时,如何安排压强高的流体的流径(管内或是管间)?简述理由。
答案
参考答案:
走管内,以免壳体受压,可节省壳程金属消耗量。
在设计换热器时,如何安排压强高的流体的流径(管内或是管间)?简述理由。
参考答案:
走管内,以免壳体受压,可节省壳程金属消耗量。
选择适当的句子补全对话。 | |
A: Mom! 1______ I've pressed the START button, and the power is on, but it doesn't work. B: Let me have a check.2______ A: Twice. 3______ B: I'm afraid so. Look! This is the START / HOLD button. It means "to stop for a while". 4______ But if you press it twice, it'll hold. A: That's why it isn't working now. 5______ B: Just press the same button again. And the machine will start working. A: OK. I'll take your advice.
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