皮皮学，免费搜题
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搜题
【单选题】
对干燥温度不太高且氧气的存在不影响被干燥物料性能的情况,采用 ( ) 作为干燥介质较适宜
A.
惰性气体
B.
热空气
C.
烟道气
D.
过热蒸汽
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举一反三
【多选题】在萜类化合物的分离中,可利用的特殊官能团有( )
A.
内酯键
B.
双键
C.
羰基
D.
碱性基团
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【单选题】“If he does not let me use his bike, I won’t let him use my computer. ” Rewrite the sentence using the word “unless”.
A.
unless he does not let me use his bike, I won’t let him use my computer.
B.
unless he let me use his bike, I won’t let him use my computer.
C.
If he does not let me use his bike, unless I won’t let him use my computer.
D.
If he does not let me use his bike, unless I let him use my computer.
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【单选题】What does the man mean?
A.
He allows the woman to close the door.
B.
He doesn't let the woman close the door.
C.
He feels rather cold too.
查看完整题目与答案
【简答题】自然铜主要含( )。A.含水硫酸钙(CaSO42H2O)B.含水硫酸钠(Na2SO410H2O)C.二硫化铁(FeS2)D.碳酸锌(ZnCO3)A. 1 B. 1 C. 1 D. 1
查看完整题目与答案
【多选题】在萜类化合物的分离中，可利用的特殊官能团有（ ）
A.
内酯键
B.
双键
C.
羰基
D.
碱性基团
E.
酸性基团
查看完整题目与答案
【单选题】What does the professor mean when he says this?
A.
Let's review the material we just covered.
B.
Let's slow down because we're going again in a while.
C.
Let's take a break and start the class again in a while.
D.
Let's move on to the next topic.
查看完整题目与答案
【单选题】Let's hope he does not bring ______ girlfriend of his!
A.
that
B.
this
C.
the
D.
a
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【单选题】My father seldom let me do that, ______.
A.
did he
B.
did not he
C.
does he
D.
does not he
查看完整题目与答案
【单选题】肾脏排H+的主要机理是
A.
H＋与Cl－结合成HCl
B.
通过碳酸酐酶的作用H＋与碳酸氢盐结合
C.
H＋与肾小管中小管液NH３结合，形成NH4＋
D.
H＋以盐酸的形式被分泌出来
E.
H＋以H２O和盐酸的形式被排除
查看完整题目与答案
【单选题】Who brought the big cake? [     ]
A.
He did.
B.
Let's see.
C.
She does.
查看完整题目与答案
相关题目：
【多选题】在萜类化合物的分离中,可利用的特殊官能团有( )
A.
内酯键
B.
双键
C.
羰基
D.
碱性基团
查看完整题目与答案
【单选题】“If he does not let me use his bike, I won’t let him use my computer. ” Rewrite the sentence using the word “unless”.
A.
unless he does not let me use his bike, I won’t let him use my computer.
B.
unless he let me use his bike, I won’t let him use my computer.
C.
If he does not let me use his bike, unless I won’t let him use my computer.
D.
If he does not let me use his bike, unless I let him use my computer.
查看完整题目与答案
【单选题】What does the man mean?
A.
He allows the woman to close the door.
B.
He doesn't let the woman close the door.
C.
He feels rather cold too.
查看完整题目与答案
【简答题】自然铜主要含( )。A.含水硫酸钙(CaSO42H2O)B.含水硫酸钠(Na2SO410H2O)C.二硫化铁(FeS2)D.碳酸锌(ZnCO3)A. 1 B. 1 C. 1 D. 1
查看完整题目与答案
【多选题】在萜类化合物的分离中，可利用的特殊官能团有（ ）
A.
内酯键
B.
双键
C.
羰基
D.
碱性基团
E.
酸性基团
查看完整题目与答案
【单选题】What does the professor mean when he says this?
A.
Let's review the material we just covered.
B.
Let's slow down because we're going again in a while.
C.
Let's take a break and start the class again in a while.
D.
Let's move on to the next topic.
查看完整题目与答案
【单选题】Let's hope he does not bring ______ girlfriend of his!
A.
that
B.
this
C.
the
D.
a
查看完整题目与答案
【单选题】My father seldom let me do that, ______.
A.
did he
B.
did not he
C.
does he
D.
does not he
查看完整题目与答案
【单选题】肾脏排H+的主要机理是
A.
H＋与Cl－结合成HCl
B.
通过碳酸酐酶的作用H＋与碳酸氢盐结合
C.
H＋与肾小管中小管液NH３结合，形成NH4＋
D.
H＋以盐酸的形式被分泌出来
E.
H＋以H２O和盐酸的形式被排除
查看完整题目与答案
【单选题】Who brought the big cake? [     ]
A.
He did.
B.
Let's see.
C.
She does.
查看完整题目与答案