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【单选题】
通常在一对变速齿轮传动中,两轮齿面接触应力 σH1 、 σH2 和两轮齿弯曲应力 σF1 、 σF2 的关系为 。A.
σH1 = σH2, σF1≠ σF2
B.
σH1 = σH2, σF1= σF2
C.
σH1 ≠ σH2, σF1≠ σF2
D.
σH1 ≠ σH2, σF1= σF2
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【单选题】Why do entrepreneurs in new ventures have to prepare a business model?
A.
To show investors how much capital the new product team will need
B.
To show investors the likely return on the investment they will receive
C.
To show potential customers that the new venture will be successful and the risk of having the new venture as a supplier go out of business is low.
D.
To show potential business partners and potential employees that their risk of having the new venture go out of business is low.
E.
All of the above.
【简答题】常见压力表有哪几种?
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【简答题】齿轮传动用于传递（）和（）运动，并可以改变运动速度和方向。
【简答题】Do You Have the Entrepreneurial Spirit? Being an entrepreneur is not all about (1) _________ . Entrepreneurs have a true pioneer spirit. Yet, they don’t just have a dream; they follow through to (2)__...
【单选题】下列关于信息分类的表述中，错误的一项是( )。
A.
A类：项目方案设计所需的一般统计信息
B.
B类：为制订项目目标及实施方案所需的有关因果关系及动态趋势的信息
C.
C类：项目社会影响评价所需的基线信息
D.
D类：项目监督与评价所需的不受项目影响的人群信息
【简答题】常见的液柱式压力计有哪几种？
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