题目内容：
下列离心式通风机的叶片中,哪种效率最高( )。(本题2.0分)A、 前弯叶片
B、 径向叶片
C、 后弯叶片
参考答案：
选择题：下列离心式通风机的叶片中,哪种效率最高( )。(本题2.0分) A、 前弯叶片 B、 径向叶片 C、
- 题目分类：河南工学院机械原理(高起专)
- 题目类型：选择题
- 查看权限：VIP
A、 前弯叶片
B、 径向叶片
C、 后弯叶片
A、 前弯叶片
B、 径向叶片
C、 后弯叶片
I was very tired when you saw me yesterday because
I was very tired when you saw me yesterday because I()(work).
____（从长远看）, prices are bound to rise .
____（从长远看）, prices are bound to rise .
They have learned about ______ in recent years.选择一
They have learned about ______ in recent years.选择一项：A.several hundreds English w
计算机系统漏洞实质上也是一种病毒。（）A.正确B.错误
计算机系统漏洞实质上也是一种病毒。（）A.正确B.错误
We have advantage __ you in the field of manufactu
We have advantage __ you in the field of manufacturing electrical products.