皮皮学，免费搜题
登录
搜题
【多选题】
在电火花数控线切割加工中,添加工作液的主要作用有()。A.
对电极、工件和切削进行冷却，降低切削热
B.
放电区消电离
C.
起润滑作用，提高表面质量
D.
对放电产物的清除
E.
提高电流强度，保证加工质量
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】●In the following essay，each blank has four choices．Choose the most suitable one from the four choices and write down in the answer sheet． A (66) is basically an end point of a communication link betw...
【单选题】----What were you saying just now? ----_______. Let’s get down to the monthly contest now.
A.
Don’t mention it
B.
Forget it
C.
That’s all right
D.
Take it easy
【单选题】--- Let’s have a rest. --- Not now. I don’t want to stop _________ now.
A.
studying
B.
to study
C.
for studying
D.
studied
【多选题】How to connect end systems to edge router?
A.
device access networks
B.
residential access networks
C.
institutional access networks
D.
mobile access networks
【简答题】Passage Two:Questions 26 to 30 are based on the following passage.As supplier of most of the food we eat and of raw materials for many industrial processes, agriculture is clearly an important area of...
【简答题】采用B/S软件体系结构的应用软件系统的优点是 、 。
【简答题】As our supplier was unable to meet the deadline for delivery,___________
【简答题】S1:Now let's check the number of liferafts,date of last services and the condition of the arrangement.S2:OK,Sir.Q:Which of the following items was not mentioned?A. The number of lifeboats. B. The date...
【简答题】S1:Now what's the next step?S2:Let's check the condition of the coaming as well as the watertightness including packing,cleats and tarpaulins.Q:What are they most probably checking?A. Air pipes. B. Co...
相关题目：
参考解析：
知识点：
题目纠错 0
发布
