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问题 多项选择题

甾体激素类药物中含有杂质的类型为

A．制备过程剩余的原料

B．中间体

C．异构体

D．降解产物

E．试剂与溶剂等

答案

参考答案：A,B,C,D,E

补全对话，情景问答
给下列的问句选择合适的答语。
( ) 1. What does your mother do?
( ) 2. How does she go to work?
( ) 3. Where does she work?
( ) 4. What's your mother's hobby?
( ) 5. Who's she?
( ) 6. What is your sister going to be?		A. She works in a shoe company.
B. the is an accountant.
C. She likes swimming.
D. She goes to work by bike.
E. She s going to be a dancer.
F. She's my art teacher.
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多项选择题

沉入桩的施工方法主要有( )。

A．锤击沉桩

B．振动沉桩

C．射水沉桩

D．静力压桩

E．自动沉桩
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