生产经营单位应确保现场人员准确知道自己在事故应急救援预案中应承担的任务（如负责抢救、监测、照顾伤员等）。（）
参考答案：对
Directions:
Suppose you are the secretary of the principal of your university. You are expected to write a memo to remind the principal of an important international meeting he has to attend the next day. Imagine some detailed activities the principal has to perform in the meeting.
Write your memo in no less than 100 words. Write it neatly on ANSWER SHEET 2.
Do not sign your own name on the memo; use Li Hua instead.
Do not write the address. (10 points)
口服短效雌孕激素复方避孕药时， * * 出血的原因有哪些？（）
A、感染
B、药量不够
C、同时服用其他类激素类药物
D、漏服，误服或药物失效
