用所给单词的适当形式填空。

1. She is worrying about her daughter's _____ (ill).

2. Some countries are good at _____ (prevent) pollution.

3. The fact is that people today live longer than they _____ (do) in the past.

4. Why don't you _____ (write) down your name on the paper?

5. Welcome to our hotel. It's the _____ (good) in the city.

某沿海电厂二期扩建4台600MW燃煤机组，电厂附近已建有400t的大件码头。电厂一期以220kV升高电压接入系统，二期4×600MW机组均接入厂内500kV配电装置，500kV出线规模为2回，厂内两级电压间交换容量为360MVA。

二期主变压器的型式为( )。

A．双绕组三相变压器；
B．三绕组三相变压器；
C．双绕组单相变压器；
D．三绕组单相变压器。