句型转换。

1. Mike's going to Hawaii on August 3rd. (改为一般疑问句)

     ______ Mike ______ Hawaii on August 3rd?

2. Dave is studying for the math test this weekend. (对画线部分提问)

    ______ Dave ______ this weekend?

3. I'm going there with my grandfather. (对画线部分提问)

    ______ you ______?

4. How's the weather there? (同义句转换)

    ______ the weather ______ there?

5. Show me your ID card. (同义句转换)

    Show ______.

合成汽包液位三冲量控制中，作为主信号的是：（）

A、蒸汽流量；

B、给水量；

C、汽包液位。