皮皮学，免费搜题
登录
搜题
【多选题】
钻机的主要参数包括( )A.
可钻最大井深、最大起重量
B.
额定重量、绞车功率
C.
转盘开口直径和泵的排量、泵压和功率
D.
钻机配备总功率和转盘工作扭矩、转速和功率
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】Why did the narrator hesitate to hire Stevie?
A.
Steviewas mentally handicapped, and the narrator didn’t like him.
B.
Thenarrator was afraid that the customers would dislike Stevie.
C.
Steviewas too stupid to be a suitable busboy.
D.
Thelaw prohibited that the handicapped person was hired.
【单选题】What did the dog-narrator feel about tracking?
A.
It did what was asked because it was obedient.
B.
It was excited, even though it wasn't a special tracker-dog.
C.
It was frustrated because it shouldn't concentrate properly.
D.
It found tracking difficult, but enjoyed it.
【单选题】下列关于泵的工作点，说法错误的是（ ）。
A.
离心泵的 工作点 是由泵的特性和管路本身的特性共同决定的
B.
工作点既在泵的特性曲线上，又在管路的特性曲线上
C.
泵的工作点就是 泵的实际工作状态
D.
泵的工作点就是泵的最大效率点
【单选题】Why did the taxi driver get the narrator to the commissariat of police rather than his apartment?
A.
The taxi driver didn’t know the complicated route to the narrator’s apartment.
B.
The taxi driver thought the narrator had grossly insulted him three times.
C.
The taxi driver thought the narrator was a wanted suspect.
D.
They had an unsettled argument over the taxi fee.
【简答题】Did the narrator like his family?
【单选题】下列说法正确的是()
A.
管路的扬程和流量取决于泵的扬程和流量
B.
泵的设计点即泵在指定管路上的工作点
C.
泵只能在工作点下工作
D.
改变离心泵工作点的常用方法是改变转速
相关题目：
参考解析：
知识点：
题目纠错 0
发布
