Research shows that people's physical and mental health ______.
A.relies on the social welfare systems which support them
B.has much to do with the amount of support they get from others
C.depends on their ability to deal with daily worries and troubles
D.is closely related to their strength for coping with major changes in their lives
第1题
第2题
第3题
第4题
GB7588-2003《电梯制造与安装安全规范》规定,动力驱动的水平滑动的自动门,阻止关门的力不应大于300N,这个力的测量不得在关门行程开始的1/3之内进行。()
第5题
动力驱动的水平滑动自动门要求在关门行程1/3后,阻止关门的力不应大于()N。
A.50
B.100
C.150
D.300
第6题
动力驱动的水平滑动自动门要求在关门行程1/3后,阻止关门的力不应大于() N。
A.50
B.100
C.150
D.303
第8题
动力驱动的水平滑动自动门要求在关门行程1/3后,阻止关门的力不应大于300N。()
A.正确
B.错误
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