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【判断题】
一般在弹簧管压力表的弹簧管自由端需加一传动放大机构来进行自由端位移放大,以提高仪表的灵敏度。A.
正确
B.
错误
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】最小二乘估计方法的本质要求是( )。
A.
各点到直线的垂直距离的和最小
B.
各点到 x 轴的纵向距离的平方和最小
C.
各点到直线的垂直距离的平方和最小
D.
各点到直线的纵向距离的平方和最小
E.
各点到直线的纵向距离的平方和最大
【单选题】听力原文：W: Shouldn't someone go to the supermarket to select some bread with the words 'iron-added' on the label? M: Don't look at me. Q: What does the man mean? (18)
A.
He doesn't like that kind of food.
B.
The woman can do some cooking herself,
C.
He doesn't intend to buy them.
D.
The woman should stop looking at him.
【单选题】— Look! There's a food shop. — Yes, we can buy some _____ in it. [ ]
A.
bread
B.
baseballs
C.
clothes
D.
books
【单选题】------You look hungry, Would you like some bread? ------_______. I'd like some hamburgers. [ ]
A.
Yes, please
B.
No, thanks
C.
Yes, I'd like to
D.
Yes, thank you
【简答题】分层指导法是指教师依据幼儿的不同水平,对幼儿进行分层次的指导。具体指目标、 _________、__________和___________分层。
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