皮皮学，免费搜题
登录
搜题
【单选题】
离心泵由正吸高改为流注吸高工作,封闭运转正常,排出阀则电流过大,应 。A.
减小管路阻力
B.
关小排出阀节流
C.
减小排出管路静压头
D.
开大旁通回流阀
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】In __ century, computers will be used more widely.
A.
twenty-one
B.
the twenty-one
C.
twenty-first
D.
the twenty-first
【单选题】What is the 'shadowland of hope' in the writer's point of view?
A.
The wonderful one often dreams about.
B.
The bright future that one is looking forward to.
C.
The state of uncertainty before one's final goal is reached.
D.
A world that exists only in one's imagination.
【单选题】2004年9月召开的党的（）审议通过了《中共中央关于加强党的执政能力建设的决定》。
A.
十六届三中全会
B.
十六届四中全会
C.
十六届五中全会
D.
十六届六中全会
【单选题】Speaker A: Lisa, who's this? Speaker B: ______________________
A.
You have a message.
B.
Yes, thank you, very well
C.
He’s my cousin, Tom.
【简答题】How old is Mrs. Green’s son? A . Twelve. B . Twenty. C . Twenty-one. D . Thirty-one.
【单选题】What's forty and twenty-one?
A.
It's sixty-one.
B.
It's fifty-one.
C.
It's one hundred.
【单选题】Speaker A: _____ Speaker B: It’s June 1st.
A.
What’s the date today?
B.
What time is it?
C.
What day is it today?
【单选题】The time difference between two neighboring zones is______.
A.
one day
B.
twenty-five hours
C.
one hour
D.
twenty-three hours
【单选题】Japan’s economy _______ in the past twenty years. No one knows how long it ______ before it regains its increase.
A.
has been declining; will be
B.
has declined; would be
C.
had been in decline; would take
D.
was on the decline; will take
相关题目：
参考解析：
知识点：
题目纠错 0
发布
