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【单选题】
铰链四杆机构的压力角是指在不计摩擦情况下主动件通过连杆作用于( )上的力与该力作用点速度方向线间所夹锐角。
A.
从动件
B.
连架杆
C.
主动件
D.
机架
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参考答案:
举一反三
【判断题】Learning to write concisely--to say in three words rather than ten--will mark you as a highly effective communicator.
A.
正确
B.
错误
【单选题】在 298K 反应 BaCl 2 ·H 2 O ( s ) = BaCl 2 ( s ) + H 2 O ( g ) 达平衡时, p ( H 2 O ) = 330 Pa 。则反应的 为 _____ kJ·mol -1 。
A.
-14.2
B.
14.2
C.
142
D.
-142
【单选题】使用UG NX系统自动编程的NC操作部分包括创建几何体、创建程序、创建刀具、创建( )等部分。
A.
加工方法
B.
加工视图
C.
加工环境
D.
加工状态
【单选题】As you are learning to write, you should have a clear idea of what is good manuscript form.In order to have a good manuscript form,you've to considering the following:
A.
Writing the title
B.
Living margins
C.
Indenting
D.
Capitalizing
E.
Dividing words
【单选题】在 298K 反应 BaCl 2 ·H 2 O(s) = BaCl 2 (s) + H 2 O(g) 达到平衡时, p (H 2 O)=330Pa ,则反应的 △ r G Ө m 为( )。
A.
-14.2 kJ·mol -1
B.
14.2 kJ·mol -1
C.
142 kJ·mol -1
D.
-142 kJ·mol -1
【多选题】In the lecture of “An Introduction to Essay Writing”, three benefits of learning to write a traditional essay of about 500 words are mentioned as follows.
A.
Helping make you a better writer.
B.
Strengthening your skills as a reader and listener.
C.
Making you a stronger thinker.
D.
Making you a better viewer.
【单选题】USB是一种总线标准,它是通用____总线标准。
A.
并行
B.
串行
C.
数字
D.
模拟
【多选题】以下是国际标准化组织推荐使用的运输标志构成内容的是( )。
A.
收货人的代号
B.
目的地
C.
件号
D.
参考号码
【单选题】(2 ) Learning how to write is similar to learning how to speak in public in that writer should _____.
A.
overcome his or her nervousness in the first place
B.
take hold of a reader and talk to him or her before writing
C.
learn to use a typewriter or dictating machine
D.
talk to himself on paper
【简答题】One advantage in learning to speak compared with learning to write is that the speaker gets immediate feedback from the ( ), so the speaker can adjust the message immediately.
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