皮皮学，免费搜题
登录
搜题
【单选题】
一矩形断面的渠道,底宽b=2.5m，当水深h=1.2m时，则其过水断面面积为( )m2A.
3
B.
2.5
C.
1.2
D.
4.9
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
【简答题】凸模和凹模的刃口磨损后,模具尺寸的变化(根据落料模)可分为 ____________ , ___________________ 和 _____________________ 三类。
【单选题】The(66)is a channel's capacity which directly reflects the data transfer rate of the channel. (67)functions in a NetWare network which is used to define addressing schemes. The(68)is a network layer d...
A.
volume
B.
bandwidth
C.
noise
D.
delay
【单选题】What is true about all three people?
A.
They are all university students.
B.
They all made a cultural mistake.
C.
They all learned something important.
【简答题】These are all my favourite (topic).
【简答题】above all
【单选题】—Your watch is so beautiful. It must be expensive. —Not at all. It only ______ $4. [ ]
A.
cost
B.
spent
C.
took
【单选题】How can you _______ yourself promoted if you just stay here, doing nothing at all?A．doB． conside
A.
4. How can you _______ yourself promoted if you just stay here, doing nothing at all? A．do
B.
consider
C.
cause
D.
Get
【单选题】可以用来对凸模、凹模镶快、电火花加工用的电极等的成形表面进行精加工，它可以加工硬质合金和热处理后硬度很高的模具零件，对制造高精度、长寿命的模具有十分重要的意义。
A.
刨模机床加工
B.
成形磨削
C.
压印锉修
相关题目：
参考解析：
知识点：
题目纠错 0
发布
