一般财产保险,尤其是火灾保险,都采用( )的形式。
A.特定危险保险
B.一切危险保险
C.定值保险
D.不定值保险
参考答案:D
China will put cultural reform and development at ____ important place in____ coming five
years, and ____quite long period of time after that.[ ]
A. an; the; a
B. a; the; the
C. the; a; a
D. the; the; a
过氧乙酸(化学式为C2H4O3)是一种杀菌能力较强的消毒剂,在“非典”时期被广泛应用.下列有关过氧乙酸的说法中不正确的是( )
A.1个过氧乙酸分子由9个原子构成
B.由三种元素组成
C.碳、氢、氧三种元素的质量比为2:4:3
D.相对分子质量为76