用特殊疑问词填空。

1. — _____ did he go?

    —By plane.

2. — _____did you live at the time? 

    —At the No.3 Beijing Road.

3. — _____is your telephone number? 

    —It's 3065431.

4. —_____was it yesterday? 

    —It was Tuesday.

5. —_____students are there in the classroom? 

    —About fifty.

配电变压器现场定相的步骤如何？