皮皮学，免费搜题
登录
搜题
【单选题】
如下图所示的蜗杆传动中，判断蜗轮的转动方向是（）。
A.
顺时针
B.
逆时针
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
.
..
皮皮学刷刷变学霸
举一反三
【单选题】听力原文：W1: I know youre all excited about our class project. But before we get started on the design of our mural, lets review some of the technical requirements for murals. What factors do we need to k...
A.
They are preparing for an examination.
B.
They plan to visit some famous murals.
C.
They are helping to design a new building.
D.
They will be creating their own mural.
查看完整题目与答案
【判断题】钢材拉伸试件安装在夹头中，试样的标距部分不得夹入钳口中，试样被夹长部分不小于钳口的二分之一。
A.
正确
B.
错误
查看完整题目与答案
【单选题】听力原文：W: Haven't I told you to finish this project before 5 o'clock? M: Yes, you have, but there is really too much to do. Has the man finished the project?
A.
Yes.
B.
No.
C.
He would not like to do.
查看完整题目与答案
【多选题】一水平放置的双杆液压缸,采用三位四通电磁换向阀,要求阀处于中位时,液压缸锁紧在任意位置。
A.
O型
B.
H型
C.
M型
D.
U型
查看完整题目与答案
【单选题】一水平放置的双杆液压缸采用三位四通电磁换向阀换向,要求阀处于中位时,液压 泵卸荷,液压缸浮动,其中位滑阀机能应选用( )。
A.
O 型
B.
M 型
C.
Y 型
D.
H 型
查看完整题目与答案
【判断题】RFID是一种接触式自动识别技术。
A.
正确
B.
错误
查看完整题目与答案
【单选题】()是西方公认第一位哲学家、科学家和数学家。
A.
赫拉克利特
B.
泰勒斯
C.
德谟克利特
D.
毕达哥拉斯
查看完整题目与答案
【单选题】W: I'm anxious to get started on our project. Can we meet sometime before the weekend? M: ______
A.
Never mind. Shall we meet on Sunday?
B.
Your project? I have no time studying your project.
C.
OK. What about Friday morning?
D.
OK. Library is the best place for us to meet.
查看完整题目与答案
【单选题】It was desired that the project ______ before the end of this month.
A.
would be finished
B.
was to be finished
C.
be finished
D.
was going to be finished
查看完整题目与答案
【单选题】Before he left on vacation, he finished the project.
A.
Before left on vacation, he finished the project.
B.
Before leaving on vacation, he finished the project.
C.
Before on vacation, he finished the project.
查看完整题目与答案
相关题目：
【单选题】听力原文：W1: I know youre all excited about our class project. But before we get started on the design of our mural, lets review some of the technical requirements for murals. What factors do we need to k...
A.
They are preparing for an examination.
B.
They plan to visit some famous murals.
C.
They are helping to design a new building.
D.
They will be creating their own mural.
查看完整题目与答案
【判断题】钢材拉伸试件安装在夹头中，试样的标距部分不得夹入钳口中，试样被夹长部分不小于钳口的二分之一。
A.
正确
B.
错误
查看完整题目与答案
【单选题】听力原文：W: Haven't I told you to finish this project before 5 o'clock? M: Yes, you have, but there is really too much to do. Has the man finished the project?
A.
Yes.
B.
No.
C.
He would not like to do.
查看完整题目与答案
【多选题】一水平放置的双杆液压缸,采用三位四通电磁换向阀,要求阀处于中位时,液压缸锁紧在任意位置。
A.
O型
B.
H型
C.
M型
D.
U型
查看完整题目与答案
【单选题】一水平放置的双杆液压缸采用三位四通电磁换向阀换向,要求阀处于中位时,液压 泵卸荷,液压缸浮动,其中位滑阀机能应选用( )。
A.
O 型
B.
M 型
C.
Y 型
D.
H 型
查看完整题目与答案
【判断题】RFID是一种接触式自动识别技术。
A.
正确
B.
错误
查看完整题目与答案
【单选题】()是西方公认第一位哲学家、科学家和数学家。
A.
赫拉克利特
B.
泰勒斯
C.
德谟克利特
D.
毕达哥拉斯
查看完整题目与答案
【单选题】W: I'm anxious to get started on our project. Can we meet sometime before the weekend? M: ______
A.
Never mind. Shall we meet on Sunday?
B.
Your project? I have no time studying your project.
C.
OK. What about Friday morning?
D.
OK. Library is the best place for us to meet.
查看完整题目与答案
【单选题】It was desired that the project ______ before the end of this month.
A.
would be finished
B.
was to be finished
C.
be finished
D.
was going to be finished
查看完整题目与答案
【单选题】Before he left on vacation, he finished the project.
A.
Before left on vacation, he finished the project.
B.
Before leaving on vacation, he finished the project.
C.
Before on vacation, he finished the project.
查看完整题目与答案