皮皮学，免费搜题
登录
搜题
【简答题】
简述光栅的组成及其与机床的安装方式，并简要说明莫尔条纹的作用。若已知光栅栅距d=0.01mm及莫尔条纹的宽度w=5mm，则莫尔条纹的放大倍数是多少？
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】企业高层领导根据经营方针确定一定期间预算额而形成的成本，主要包括研究开发费、广告宣传费、职工培训费等项目。这样的成本是（）。
A.
酌量性固定成本
B.
阶梯式成本
C.
约束性固定成本
D.
直接成本
【单选题】Thinking is any mental activity that helps us _________ or solve a problem, make a decision, or fulfill a desire to understand.
A.
duplicate
B.
simulate
C.
formulate
D.
verify
【简答题】We all make negative decisio ns about people and ideas. However, ________________ someone or something is not necessarily a ____________.
【单选题】According to the author, the function of the structured-inquiry method is
A.
to make decisions by debate.
B.
to apply the Internet and wireless computer technology.
C.
to brake on the thinking process, slowing it down.
D.
to create a level of conceptual clarity.
【单选题】As a candidate, you must make a good ____ on everyone if you want to win the election. [ ]
A.
decision
B.
situation
C.
impression
D.
position
【简答题】The member countries of the UN and its specialized agencies give guidance and make decisions on______in regular meetings held throughout each year.
【单选题】企业高层领导根据经营方针确定一定期间预算额而形成的成本,主要包括研究开发费、广告宣传费、职工培训费等项目。这样的成本是
A.
酌量式固定成本
B.
阶梯式固定成本
C.
约束性成本
D.
直接成本
【单选题】Whats the authors opinion on what to do about alien species?
A.
Who should make such decisions is open to doubt.
B.
The decisions should be based on scientists' conclusions.
C.
Decision-making should involve more people other than scientists.
D.
It is morally unacceptable to eradicate all alien species.
【单选题】It doesn’t make ______ to buy that expensive coat when these cheaper ones are just as good.
A.
decision
B.
promise
C.
sense
D.
peace
【单选题】Andy knew it the moment he woke up that morning. This was the day he had to make a decision. The train【C1】______and he saw a lot of other people getting on the train who were【C2】______making the same ...
A.
moved
B.
arrived
C.
ran
D.
left
相关题目：
参考解析：
知识点：
题目纠错 0
发布
