汽轮机启动前先开润滑油泵，运行一段时间后再启动高压调速油泵，

搜题请搜索小程序“爱下问搜题”

问题填空题

汽轮机启动前先开润滑油泵，运行一段时间后再启动高压调速油泵，其目的主要是（）。

答案

参考答案：排出调速系统中积存的空气

完形填空

I have a good friend． 1 name is Peter．We study in Beijing Sunshine Secondary Schoo1．We are in the same(同一个)class．He sits in front of 2 ．His favourite lesson is Music．He 3 many CDs．He likes 4 music very much．He likes playing football，t00．After school we often play football in the 5 ．He is very helpful．We often help each 6 ．

Peter is not a Chinese．He is from 7 ．He comes to Beijing 8 his family．His father is a doctor and his mother is a nurse．They work from Monday 9 Friday．At weekends，his mother likes shopping and his father likes fishing．Sometimes they go to the park．They all like Chinese food．They lO very happy．

1．A．He B．His C．She

2．A．I B．my C．me

3. A．have B．has C．there is

4．A．1isten B．1isten to c．1istening to

5．A．classroom B．library c．playground

6．A．one B．other C．others

7．A．England B．Chinese C．Eng]ish

8. A. from B．on C．with

9．A in B．to C．with

10. A．be B．am C．are

查看答案

多选题