问题
单项选择题
羟苯酯类的作用为（）。
A．矫味剂
B．非极性溶剂
C．半极性溶剂
D．极性溶剂
E．防腐剂
答案
参考答案：E
解析：
[知识点] 液体药剂的附加剂
搜题请搜索小程序“爱下问搜题”
羟苯酯类的作用为（）。
A．矫味剂
B．非极性溶剂
C．半极性溶剂
D．极性溶剂
E．防腐剂
参考答案：E
解析：
[知识点] 液体药剂的附加剂
| 完形填空。 | |||
| Dear Tony, My name is William.I'm from the USA. I can __1__ English and __2__ Chinese.Can you speak English very __3__ ? I think I can help you __4__ your English. I like music.I can sing __5__ I can play the piano. I __6__ the trumpet and the violin.but not very well.Can you play __7__ music instruments (乐 器)? I like sports , too. I can play soccer and now I'm __8__ my school soccer club. Do you __9__ any sports club? Please write soon! I really want __10__ something about you! Looking forward to (盼 望) your letter. Your friend, William | |||
| ( ) 1. A. speak ( ) 2. A. many ( ) 3. A. good ( ) 4. A. on ( ) 5. A. and ( ) 6. A. can play also ( ) 7. A. some ( ) 8. A. with ( ) 9. A. take ( ) 10. A. know | B. talk B. a little B. nice B. in B. but B. can also play B. a little B. for B. play B. to know | C. want C. a C. well C. for C. also C. also can play C. any C. of C. join C. join | D. have D. more D. interesting D. with D. too D. can too play D. a D. in D. do D. to join |