为什么爆破母线不准有明接头?
参考答案:
为避免网络与外界相连发生漏电、短路,引发雷管意外爆炸,爆破母线不准有明接头;且明接头会增加爆破网路的电阻值,易导致拒爆、丢爆。
小题1:0ur city is beautiful.(改为感叹句)
______ our city is!
小题2:There are two hundred famous companies in Xinjiang from 19 provinces.(对划线部分提问)
______ _______famous companies in Xinjiang are there from 19 provinces?
小题3:1 am surprised to find great changes have taken place in China.(改为同义句)
______ my ______ ,I find great changes have taken place in China.
小题4:My son is too young to join the army. (改为同义句)
My son isn’t _______ to join the army.
小题5:She hardly knew how to solve this math problem.(完成反义疑问句)
She hardly knew how to solve this math problem, _______ ________ ?
以下属于地图编制内容的是()
A.符号系统与注记
B.文字说明
C.色彩系统
D.图面配置