配电变压器双杆式台架安装时,要求两杆之间距离为2.5~3.5m。()
参考答案:错
— It’s the office! So you know eating is not allowed here.
— Oh, sorry.
A.must
B.will
C.may
D.need
例举并描述热生长SiO2–Si系统中的电荷有哪些?