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【单选题】
下列测量方法中,哪种不是用来测量螺距的?A.
钢直尺测量，除以螺距个数
B.
游标卡尺测量，除以螺距个数
C.
螺距规测量
D.
螺纹千分尺或者三针测量
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皮皮学刷刷变学霸
举一反三
【简答题】Complete the dialogue with proper words or sentences. A: Good morning, madam! B: Good morning, sir! A: You look worried. (56) ? B: My son got lost when I was talking with my friend in the park. I’ve l...
【单选题】根据下面对话，回答题。 Dialogue One Speaker A: Good evening, sir and madam. Speaker B: Good evening ____1______ Speaker A: Let me check the list. Yes, we do have a reservation under Mr. Stephen. Speaker B: _____...
A.
it’s a window table that we’ve booked
B.
just usher him here
C.
We’ve a reservation for a table for two under the name of Stephen
D.
But there is a change in the number of people
【简答题】Complete the dialogue with proper words or sentences. A: Good morning, madam! B: Good morning, sir! A: You look worried. 1._____________? B: My son got lost when I was talking with my friend in the pa...
【多选题】某平面一般力系向某点简化，其主矢及主矩皆不为零，若适当选择简化中心，简化后可能出现的结果为（）
A.
主矢为零
B.
主矩为零
C.
主矢不变而主矩增大
D.
主矩改变，主矢也改变
【简答题】已知某动物活到7岁的概率为0.7,活到10岁的概率为0.56,若该动物已经活到7 岁, 它再活3年的概率为 (填写小数形式)
【简答题】如图所示矩形板所受的剪流为10000 N/m，板的厚度为0.001 m，剪切模量G=7e+10 Pa，则剪流在板上做的功为（填写小数形式）（）N·m。【图片】
【单选题】Besides being short, a good dialogue must be ______ in such a way that the speakers’ parts are balanced.
A.
updated
B.
constructed
C.
demonstrated
D.
valued
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