往复泵允许用吸入管路上的闸阀调节泵的流量。_爱下问搜题

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问题判断题

往复泵允许用吸入管路上的闸阀调节泵的流量。

答案

参考答案：错

完形填空

To my family and friends,
As some of you know, I have just started my tour in the remote mountain area. Everything is going really well, so no      .The land is beautiful but unfortunately it has a lot of        too. I have received several emails asking what I need while I'm here .so I decided to write you all and let you know that I don’t need anything. At least not for me. I’m asking all of you to send me a few       to help the local children. Let me explain.
On 12 May 2009, in a small village here, 120 school age girls were       by a gas leak（煤气泄漏）. Most have      but 6 are still in hospital. Even though the local government speaks about the     of education for both boys and girls but most of these kids only attend school for four hours a day if they are even allowed to go. They are so excited and     to learn, but then have to     things like being sprayed（喷射） with acid or poisoned. Most of these kids are poor and can’t     a pencil, pen or even paper to write on. So my co-workers and I are planning a trip to several schools to promote      and to give these kids some of the       they need. That is where all of you come in. If you can, please       whatever school supplies you currently have     .
That would be a huge help.
I know how busy you are so thank you for taking the     to do this and I will post pictures of this    after we go.
Thank you again.
Todd Tucker

B．attractions

C．discouraged

C．possibility

A．Information

C．communication

C．responsibility

A．Advertisement

单项选择题

调节器输出的改变量与被调参数的偏差值成（）的调节规律，称为比例调节规律。

A、正比

B、反比

C、比例

D、不成比例