对焊接长钢轨要用矫直机矫直,要求用1m直尺检查弯曲尺度,其值不得超过()mm。
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铝热焊中,氧化铁和铝粉占整个焊剂总重量的()以上。
A. 80%
B. 90%
C. 70%
D. 60%
铝热焊中的平静时间一般为()。
A. 6s~18s
B. 5s~15s
C. 7s~15s
D. 10s~20s
To spend or save is a question which many people have. There is always a(n) (1)______ whether one should spend the money that he has earned or save that money for the future. Well, there is no (2)_________ answer to the question as different people have different (3)__________ on their life, and that is the reason why some people tend to spend all the money earned while others (4)_________ control over their money.People who spend all the money do not think much about the future. The only thing that they enjoy doing most is to (5)__________ pleasure from spending money. For example, if they like a particular car, mobile phone or laptop, they will buy it without giving it a thought. For them, the most important thing is to satisfy their material (6)_________. People who have their first job or who haven’t married often fall in this category.In the long run, saving is a good (7)_________ for one’s life as saving helps an individual to plan for future (8)________ needs. That is also the reason why many people save money for a rainy day. Individuals who can (9)_______ their spending save money successfully. Instead of buying on impulse, they delay their purchasing decision and won’t be easily (10)_________by commercial ads. Individuals who have responsibility for their family belong to this category.
个人与社会的关系是( )
A. 社会是个人生存和发展的基础,个人是构成社会的前提
B. 个人与社会没有关系
C. 个人应该脱离社会,才能获得自由
D. 个人和社会是一回事