用所给词的适当形式填空。

1.Julie Thompson is the ___________ (invent) of battery-operated slippers.

2.There are some green ___________ (leaf) on the tree.

3.When was the old bridge _________ (build)?

4.This trip was very ____________ (please). Everyone had a good time.

5.I think the soup tastes quite ___________ (salt).

某发电站的输出功率为10⁴ kW，输出电压为4 kV，通过理想变压器升压后向80 km远处用户供电．已知输电线的电阻率为ρ＝2.4×10^－8Ω·m，导线横截面积为1.5×10^{－4 m2}，输电线路损失的功率为输出功率的4%.求：

(1)升压变压器的输出电压．

(2)输电线路上的电压损失．