My father was born ___ 5th April ,1960 . [ ]
A. in
B. at
C.on
D. of
答案:C
驾驶机动车通过这种傍山险路要靠左侧行驶。
企业安排员工定期体检属于()措施。
A.纯预防性
B.半预防性
C.损失减少
D. 风险回避