搜题请搜索小程序“爱下问搜题”
问题 填空题

抗“非典”期间，个别商贩将原来每桶价格a元的过氧乙酸消毒液提高20%后出售，市政府及时采取措施，使每桶的价格在涨价后下降15%，那么现在每桶的价格是______元．

答案

依题意列式为：a（1+20%）×0.85=1.02a或

51
50
a．

多项选择题

常用的项目风险分析与评价的方法主要有( )。

A．调查打分法

B．蒙特卡洛模拟法

C．敏感性分析法

D．专家分析法

E．计划评审技术法
查看答案
单项选择题

More and more residences, businesses, and even government agencies are using telephone answering machines to take messages or give information or instructions. Sometimes these machines give (1) instructions, or play messages that are difficult to understand. If you (2) telephone calls, you need to be ready to respond when you get a (3)

The most common machine is the (4) used in residence. If you call a home (5) there is a telephone answering machine (6) you will hear several rings and then a recorded message that (7) says something like this: "Hello. We can’t come to the (8) right now. If you want us to call you back, please leave your name and number after the beep." Then you will hear a "beep", (9) is a brief, high-pitched (10) . After the beep, you can say who you are, whom you want to speak to, and what number the person should call to (11) you, or you can leave a (12) . Some telephone answering machines record for only 20 or 30 seconds after the beep, (13) you must respond quickly.

Some large businesses and government agencies are using telephone answering machines to provide information on (14) about which they receive a large volume of (15) . Generally speaking, using these systems (16) you to have a touch-tone phone ( a phone with buttons rather than a rotary dial). The voice on the machine will tell you to (17) a certain button on your telephone if you want information on Topic A, another button for Topic B, and so on. You listen (18) you hear the topic you want to learn about, and then you push the (19) button. Immediately after making your (20) , you will hear a recorded message on the topic.

5（）

A．impossibly

B．hardly

C．always

D．usually
查看答案