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【多选题】
可用于静脉注射用的表面活性剂为A.
十二烷基硫酸钠
B.
豆磷脂
C.
脂肪酸山梨坦80
D.
188
E.
油酸钠
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举一反三
【单选题】——I‘m so sorry for stepping on your foot.——__
A.
That's all right
B.
You didn't hurt me at all
C.
No， it was my fault
D.
Yes， don't worry about it
【简答题】After stepping into the classroom, I glanced round all the students and began my following words. “Thank you” are my 小题1: words, which I would like to use to express my deepest 小题2: to all of you. Thi...
【简答题】Stepping into a pool of water is common enough, but who could ever imagine stepping into a pool of fish? In February of 1974, Bill Tapp, an Australian farmer, saw a rain of fish that covered his farm....
【单选题】On stepping into the room this morning, I was astonished to find the floor covered with _______ looked like tiny insects.
A.
that
B.
what
C.
where
D.
when
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