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在回油节流调速回路中,节流阀处于节流调速工况,系统的泄漏损失及溢流阀调压偏差均忽略不计。当负载F增加时,泵的输出功率()。
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()节流调速回路可以承受负值负载
Complete the sentences by choosing suitable words below to collocate with the italicized words.necessarynecessitya. The more we come into contact with other civilizations, the more we recognize the ____________ to know about our own history.b. To choose a host family, ask in advance the host family any questions ____________ for your making the decision.
extendedextensivea. When you live in a new cultural context, you can acquire ____________ first-hand experience about that culture.b. Contrasted with the large ____________ families years ago, average Chinese families now have fewer children.
oppositionopposeda. We wish to express our regret that what we have said is ____________ to the views of a respectable man in our culture.b. Different from his American classmates, he rarely expressed ____________ to any idea or action, no matter how awful it was.
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