()因其水溶液振摇时能产生大量泡沫似肥皂而得名。大多数为白色或乳白色无定形粉末,具有吸湿性,能溶于水,通常对热稳定,但在酸性条件下,受热易分解。
参考答案:皂苷
--What about finding out Alice is going to Hefei ?
--I’m afraid her friends have told her Hefei has many places of great interest.
A.where
B.that
C.why
D.how
中国进出口银行主要是为( )出口提供出口信贷。
A.农产品 B.机电产品和成套设备等资本性货物C.轻纺产品 D.高科技产品