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【多选题】
下列哪些不是维生素C所具有的性质( )
A.
在乙醚、三氯甲烷中溶解
B.
具还原性
C.
具有糖的性质
D.
分子中有两个手性碳原子
E.
在酸性溶液中
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参考答案：
举一反三
【单选题】下列哪一项是细菌细胞壁的主要成分:
A.
磷壁酸
B.
外膜层
C.
脂多糖
D.
肽聚糖
查看完整题目与答案
【单选题】确定单根V带许用功率P0的前提条件是( )。
A.
保证带不打滑
B.
保证带不打滑,不弹性滑动
C.
保证带不打滑,不疲劳破坏
D.
保证带不疲劳破坏
查看完整题目与答案
【单选题】听力原文：M：I am told that there is something wrong with your video camera? Let me see what's the matter. W: Oh, I went to the shop and had them replace it with a new one yesterday afternoon. What did the ...
A.
She went to the shop.
B.
She returned it to the shop.
C.
She had it changed.
D.
She replaced it with a new one.
查看完整题目与答案
【单选题】5-16．确定单根 V 带许用功率 P0 的前提条件是 。
A.
保证带 不 打滑
B.
保证带 不 打滑，不弹性滑动
C.
保证带 不 打滑，不疲劳破坏
D.
保证带 不 疲劳破坏
查看完整题目与答案
【单选题】听力原文：M: What did you think about the video we were supposed to watch for Professor Stephen' s class? W: I didn't see it. Was it good? M: Really it was. It was about stress, the effects of stress on th...
A.
It is required by Professor Stephen.
B.
It is very interesting.
C.
He wants to know about heart attacks.
D.
He took part in the discussion.
查看完整题目与答案
【单选题】肽聚糖是细菌细胞壁的主要成分,也是( )的特有成分
A.
原核细胞
B.
真核细胞
C.
非细胞型微生物
D.
真核细胞型微生物
查看完整题目与答案
【判断题】脂多糖是细菌细胞壁的主要成分。( )
A.
正确
B.
错误
查看完整题目与答案
【单选题】What is wrong with the video recorder?
A.
It was slightly damaged.
B.
It destroys video tapes.
C.
Its compartment is broken.
D.
It produces unclear visions.
查看完整题目与答案
【单选题】According to the video,what will the manager do at 10 a.m.?
A.
have lunch with Mrs. Foster
B.
have a meeting about the overseas market
C.
attend a press conference
D.
fly to Paris
查看完整题目与答案
【单选题】What else can we learn from the video?
A.
What else can we learn from the video?
B.
The show will start at 8 pm.
C.
Jack is bound to be late for the show.
D.
Jack promises to come to the Hall before eight.
查看完整题目与答案
相关题目：
【单选题】下列哪一项是细菌细胞壁的主要成分:
A.
磷壁酸
B.
外膜层
C.
脂多糖
D.
肽聚糖
查看完整题目与答案
【单选题】确定单根V带许用功率P0的前提条件是( )。
A.
保证带不打滑
B.
保证带不打滑,不弹性滑动
C.
保证带不打滑,不疲劳破坏
D.
保证带不疲劳破坏
查看完整题目与答案
【单选题】听力原文：M：I am told that there is something wrong with your video camera? Let me see what's the matter. W: Oh, I went to the shop and had them replace it with a new one yesterday afternoon. What did the ...
A.
She went to the shop.
B.
She returned it to the shop.
C.
She had it changed.
D.
She replaced it with a new one.
查看完整题目与答案
【单选题】5-16．确定单根 V 带许用功率 P0 的前提条件是 。
A.
保证带 不 打滑
B.
保证带 不 打滑，不弹性滑动
C.
保证带 不 打滑，不疲劳破坏
D.
保证带 不 疲劳破坏
查看完整题目与答案
【单选题】听力原文：M: What did you think about the video we were supposed to watch for Professor Stephen' s class? W: I didn't see it. Was it good? M: Really it was. It was about stress, the effects of stress on th...
A.
It is required by Professor Stephen.
B.
It is very interesting.
C.
He wants to know about heart attacks.
D.
He took part in the discussion.
查看完整题目与答案
【单选题】肽聚糖是细菌细胞壁的主要成分,也是( )的特有成分
A.
原核细胞
B.
真核细胞
C.
非细胞型微生物
D.
真核细胞型微生物
查看完整题目与答案
【判断题】脂多糖是细菌细胞壁的主要成分。( )
A.
正确
B.
错误
查看完整题目与答案
【单选题】What is wrong with the video recorder?
A.
It was slightly damaged.
B.
It destroys video tapes.
C.
Its compartment is broken.
D.
It produces unclear visions.
查看完整题目与答案
【单选题】According to the video,what will the manager do at 10 a.m.?
A.
have lunch with Mrs. Foster
B.
have a meeting about the overseas market
C.
attend a press conference
D.
fly to Paris
查看完整题目与答案
【单选题】What else can we learn from the video?
A.
What else can we learn from the video?
B.
The show will start at 8 pm.
C.
Jack is bound to be late for the show.
D.
Jack promises to come to the Hall before eight.
查看完整题目与答案
参考解析：
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