单因素敏感性分析中，设甲、乙、丙、丁四个因素分别发生5%、10%、10%、15%的变

根据短文内容和首字母的提示，把文中所缺词语补充出来，使短文完整、正确、通顺。(每空限填一词，

将其完整形式填写在横线上)。

                                                                My biggest problem

     My biggest problem is that I'm too busy. When I was young, I used to have so much time, but these days

I get up (1)e______ and stay in school all day. Then I go right home and eat (2)d______. Before I started high

school, I used to spend a lot of time (3)p______ games with my friends, but I just don't have the time anymore.

In the evening, I used to watch TV or chat (4)w______ my grandmother, but now I have to study. I love music,

and my father used to take me to concerts. These days, I hardly ever have time for concerts. I do my

homework and go to bed. I really (5)m______ the old days.

某企业2010年生产总值为140万元，产品销售收入为119万元，产品销售成本为86万元，产品销售利润为21.29万元。根据上述资料回答下列问题。

销售收入成本率为（）。

A.70.27%

B.71.27%

C.72.27%

D.73.27%

患者，女，27岁，已婚。妊娠后小腹绵绵冷痛，形寒肢冷，面色白，纳少便溏，舌淡苔薄白，脉细滑弱。治疗应首选（）

A.当归芍药散

B.调肝汤

C.胶艾汤

D.逍遥散

E.寿胎丸

双工器的作用是（）

A．在同一付天线上进行收发

B．可以合并接收信号

C．用于跳频

D．增大发射功率

过流保护加装低电压闭锁是为了提高保护装置在发生短路故障时的（）。

A.快速切除故障能力的要求

B.动作可*性的要求

C.灵敏度的要求