Everything()if Albert hadn't called the fire brigade.
A. had been destroyed
B. was destroyed
C. would be destroyed
D. would have been destroyed
承压水的等水压线图与潜水的等水位线图没有任何区别。
A. 正确
B. 错误
在DOM对象模型中,下列选项中的()对象位于DOM对象模型的第二层。
A. history
B. document
C. button
D. text
国家规定娱乐业的营业税税率范围为()
A. 3%—5%
B. 5%—33%
C. 3%—20%
D. 5%—20%