职业健康安全管理体系通过对危险源的辨识,(),改进职业健康安全绩效,满足员工和相关方的要求。
A.评价风险
B.控制风险
C.投资风险
D.进度风险
E.质量风险
参考答案:A, B
The workers in Australian Air Line had been on strike for two weeks. At last they had their pay _______.
A.raised
B.raising
C.risen
D.rising
一梁的截面为正方形,若按图示两种方式放置,则两者的刚度关系为()。
A.A>B
B.A.=B.
C.A.>B.
D.不能确定