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【单选题】
下列关于乙酸的叙述正确的是( )
A.
乙酸俗称醋酸,又叫冰醋酸,是混合物
B.
乙酸的结构 CH 3 COOH
C.
乙酸的官能团为羟基 --OH
D.
乙酸易溶于水和难溶于乙醇
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参考答案:
举一反三
【多选题】在航次租船下,货物装卸费由船舶出租人还是承租人负责取决于合同的具体规定。下列( )表明船舶出租人不负责货物装船费用。
A.
FILO
B.
FIOST
C.
LIFO
D.
LINER TERMS
【单选题】听力原文:M: I'd like to thank Mary for her gift. Do you know her address? W: Sorry, I don't have it on me at present. Q: What is the man going to do? (16)
A.
Send Mary a gift.
B.
Give the woman Mary's address.
C.
Send a thank-you card to Mary.
D.
Mail Mary a card of sympathy.
【单选题】I'd ( ) a beer too. Thank you.
A.
like having
B.
like to have
C.
like have
【单选题】下列房地产转让行为中应征收土地增值税的是( )。
A.
企业兼并转让的房地产
B.
出租土地使用权
C.
用于贷款抵押期间的房地产
D.
单位之间相互交换的房地产
【单选题】听力原文:M: Sit down, please. Miss Jenkins. W: Thank you, sir. M: Well, I'd like to start our conversation with some questions. Shall I start? W: Sure. M: Can you type, Miss Jenkins? W: Yes, I can. M: How...
A.
A formal talk between the boss and his secretary.
B.
An informal talk between two friends.
C.
A formal talk between a professor and a student.
D.
An interview between the interviewer and the job applicant.
【多选题】在航次租船下,货物装卸费由船舶出租人还是承租人负责取决于合同的具体规定。下列( )表明船舶出租人不负责货物装船费用。
A.
FILO
B.
FIOST
C.
LIFO
D.
LINER TERM
【单选题】下列房地产转让行为应征收土地增值税的是( )。
A.
继承房屋
B.
无偿赠与房屋给直系亲属
C.
被兼并企业将房屋并入兼并企业中
D.
合作建房有偿转让的
【多选题】在航次租船下,货物装卸费由船舶出租人还是承租人负责取决千合同的具体规定。下列( )表明船舶出租人不负责货物装船费用。
A.
FILO
B.
FIOST
C.
LIFO
D.
LINER TERM
【简答题】设向量 a , b 满足 | a |=| b |=1 , a ? b =- 1 2 ,则 | a +2 b | =______.
【简答题】设a-b=ab,则 1 a - 1 b 的值是______.
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