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【判断题】
磨损、腐蚀和断裂是机件的三种主要失效形式,其中以断裂的危害最大。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】下列关于宏观经济学流派的说法,错误的是()。
A.
不同流派之间观点会有所冲突
B.
每一理论都隐含一系列假设
C.
不同理论间分歧或冲突的实质是彼此隐含的假设不同、适用的现实经济条件不同
D.
在是否主张政府干预经济这一观点上各流派看法一致
【简答题】怎样简便就怎样算． （1）0.25×（4+0.4）+0.9 （2）0.89×1.25-0.09×1.25 （3）104×0.25 （4）40×0.625+0.375×40．
【单选题】When we came to the gate, he stopped _______ me go in first.
A.
to let
B.
to tell
C.
to allow
D.
to ask
【简答题】Complete the following summary according to the text. Write no more than three words on each line. In the author’s opinion, the family education on 1. to society exerts a strong influence on both him ...
【简答题】直接写出得数． 0.9×8= 1.1×8= 0.25×4= 0.15×40= 2.5×2= 1.25×8= 0.75×2= 12.5×2=
【简答题】直接写出得数。 2.2-1.7= 0.9×99+0.9= 0.25×40= 400÷25÷8= 10- = （ + ）×30=
【简答题】直接写得数。 0.9×99+0.9= 0.25×40= 9.9÷ = 400÷25÷8= 4÷8= - = -0.75-25%= 10- = 1÷ × = 8.75-（3.6+0.75）=
【简答题】（本题满分12分） 已知数列 是首项为1的等差数列，其公差 ，且 ， ， 成等比数列. （1）求数列 的通项公式； （2）设数列 的前n项和为 ，求 的最大值.
【单选题】Could you find out the euphemism in the following sentence: “He was both out of pocket and out of spirits by that catastrophe, failed in his health and prophesied the speedy ruin of the empire”?
A.
Out of pocket
B.
out of spirits
C.
prophesied
【多选题】Listen to D2 and choose the information you hear. A Steven introduces his friends to Betty. B Both Betty and David like table tennis. C David thinks that climbing mountains is good for health. D Betty...
A.
Steven introduces his friends to Betty.
B.
Both Betty and David like table tennis.
C.
David thinks that climbing mountains is good for health.
D.
Betty suggests that they watch a table tennis match next weekend.
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