根据句意填空,首字母已经给出。

1.When you want to post a letter,you need a s________.

2.You room is u________.You need to clear it up.

3.Edison was so c________ that he invented a lot of things.

4.You have collected all different kind of dolls.We can say you have a big c________.

5.Many students have h________ such as reading,painting and so on.

金属氧化物避雷在线监测装置主要监测的状态量是（）。

A.全电流

B.介质损耗因数

C.电容量

D.阻性电流