钨极氩弧焊机的调试内容主要是对电源参数调整、控制系统的功能及其精度、供气系统完好性、焊枪的发热情况等进行调试。()
参考答案:对
阅读理解。
根据下面地图,选择最佳答案。
1.There is _______ in the place.
A. a library and an old bridge
B. a school and a hotel
C. a post office and a restaurant
2.The pay phone is _______ the park.
A. in
B. between
C. in front of
3.If you are at the pay phone, just go straight and turn left, you can see _______ on your right .
A. a school
B. a library
C. a supermarket
4.Where is Mary’s house?
A. It’s on Jiefang Street.
B. It’s on Shanghu Street.
C. It’s between the hotel and the supermarket.
5.If you are at A, how can you get to the pay phone?
A. Go straight and turn right
B. Go down Shanghu Street and left.
C. Go down Jiefang Street and turn right.
新型干法线均化链的组成()、()、()、()、()。