关于《安全生产法》的立法目的,下列表述中不准确的是()。
A.加强安全生产工作
B.保障人民群众生命和财产安全
C.防止和减少生产安全事故
D.提升经济发展速度
参考答案:D
已知向量组α1=(1,-2,3)T,α2=(3,0,1)T,α3=(1,4,-5)T与向量组β1=(a,2,0)T,β2=(1,b,1)T,β3=(2,-3,-2)T具有相同的秩,且β1可以由α1,α2,α3线性表出,则a=______,b=______.
The U.S. Bureau of Indian Affairs awarded your firm a contact to renovate an elementary school on a Navajo reservation. One contractual term, Indian preference, requires you to hire native American Laborers and subcontractors from the reservation. This is an example of which type of the following constraints
A.Socia
B.Economica
C.Environmenta
D.Lega