高压水洗水箱压力（）Mpa。
A、0.5—0.7
B、0.7—1.0
C、1.0—1.2
参考答案：B
It is said that dogs will keep you for as long as you want when you are feeling lonely. [ ]
A. safety
B. company
C. house
D. friend
折旧是现金的一种来源。（）
