皮皮学，免费搜题
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搜题
【单选题】
当数据库损坏时,数据库管理员可通过( )恢复数据库。
A.
事务日志文件
B.
主数据文件
C.
DELETE语句
D.
联机帮助文件
拍照语音搜题，微信中搜索"皮皮学"使用
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知识点：
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皮皮学刷刷变学霸
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.
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【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.
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【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
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【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】当梭外肌发生等张收缩时出现()
A.
腱器官的传入冲动增多,肌梭的传入冲动不变
B.
腱器官的传入冲动不变,肌梭的传入冲动增多
C.
腱器官的传入冲动不变,肌梭的传入冲动减少
D.
腱器官的传入冲动减少,肌梭的传入冲动不变
E.
肌梭和腱器官的传入冲动均增多
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
【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】当梭外肌发生等张收缩时出现()
A.
腱器官的传入冲动增多,肌梭的传入冲动不变
B.
腱器官的传入冲动不变,肌梭的传入冲动增多
C.
腱器官的传入冲动不变,肌梭的传入冲动减少
D.
腱器官的传入冲动减少,肌梭的传入冲动不变
E.
肌梭和腱器官的传入冲动均增多
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