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【单选题】
维生素C(VitaminC)又名抗坏血酸，具有酸性和强还原性，也是一种常见的食品添加 剂，其结构如图。下列有关说法中正确的是A.
维生素C的分子式为C 6 H 10 O 6
B.
维生素C的酸性可能是③、④两个羟基引起的
C.
维生素C由于含有C=O键而能发生反应
D.
维生素C由于含有酯基而难溶于水
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【简答题】Complete the sentences with words you heard. 1. Sorry, I’m going to be late. The ________ is really bad today. It must be rush hour. 2. I want to go ________ and do some shopping. All the best shops ...
【单选题】根据以下内容回答题： In Hollywood there is a company that publishes children’S books with the aid of computers．Mthough other book companies also publish that（1），this particular company is very unusual．It“person...
A.
item
B.
way
C.
kind
D.
form
【单选题】Which expression uses exophoric reference?
A.
This is the tendency.
B.
How did you get on, Jenny?
C.
“If it hadn’t been, been for - for Malaysia”.
D.
I didn’t bloody get it.
【简答题】阅读下列材料,回答问题: “30年前的今天,党的十一届三中全会隆重召开。这次会议,实现了新中国成立以来我们党历史上具有深远意义的伟大转折,开启了我国改革开放历史新时期。” — —在纪念改革开放30周年大会讲话 1十一届三中全会于哪一年在北京召开? 2这次会议重新确立的思想路线是什么? 3这次会议作出了什么历史性决策? 4这次会议实际上形成了以谁为核心的党的第二代集体? 5根据材料说说...
【简答题】Jenny uses a ______ music player, so she can take it with her when she is working in the yard. 便携的
【简答题】从建筑空间位置角度,车站一般包括哪几部分?
【单选题】Jenny's Corporation manufactured 25,000 grooming kits for dogs during March (assume Jenny uses standard costing). The fixed overhead cost allocation rate is $20.00 per machine hour. Below is the fixed...
A.
$120,000
B.
$122,000
C.
$123,000
D.
$125,000
【单选题】Jenny's Corporation manufactured 25,000 grooming kits for dogs during March (assume Jenny uses standard costing). The fixed overhead cost allocation rate is $20.00 per machine hour. Below is the fixed...
A.
$3000 U
B.
$2000 F
C.
$5000 F
D.
$1000 U
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