句型转换。

1. I need one apple. (改为一般疑问句)

    ______ you ______ one apple?

2. They need yogurt. (改为否定句)

    They ______ ______ yogurt.

3. Drink the smoothie. (以he为主语改写句子)

    ______ ______ the smoothie every day.

4. We need one teaspoon of cinnamon. (对划线部分提问)

    How ______ ______ of cinnamon do you need?

多组分监测装置可监测的氢气最低检测限值为（）。

A.0.1μL/L

B.0.2μL/L

C.0.5μL/L

D.2μL/L