搜题请搜索小程序“爱下问搜题”
问题 问答题 简答题

为什么在高压电线下或与高压电线距离在危险范围内且没有断电的情况下，禁止进行吊装作业？

答案

参考答案：

吊车拔杆、索具、悬吊重物可能接触电力线，导致人员伤亡或设备损坏。

完形填空

阅读下面的短文，在标有序号的空白处填入一个适当的词或用括号中词的适当形式填空。

The skin is  小题1:    essential part of your body and its largest organ. You have three

 l 小题2:   of skin which act as a barrier　小题3:　disease , poisons and the sun’s harmful rays. The functions of your skin are also very 小题4:　: it keeps you warm or cool; it小题5:　your body from losing too much water; it is __小题6:__ you feel cold , heat or pain and it gives you your 小题7:　of touch. So as you can imagine, if your skin gets _小题8:__  it can be very serious. First aid is a very important 小题9:　step in the treatment of burns . You can get burned by a variety of things. There are three types of burns, 小题10: (depend) on which layers of the skin are burned.

查看答案
多项选择题

（）是无线系统常用的测试仪器。

A、频谱仪

B、场强仪

C、天馈线测试仪

D、路测仪
查看答案