JSA是事先或定期对某项工作任务进行风险评价，并根据评价结果制定和实施相应的控制（）。
A、方法
B、目的
C、措施
参考答案：C
二项分布的总体均数为（）
A.A
B.B
C.C
D.D
E.E
The current annual inflation rate, as measured by using the Consumer Price Index (CPI), is best defined as:（）
A. increase in the CPI from a year ago.
B. percentage change in the CPI from its base period.
C. percentage change in the CPI from a year ago.
