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【简答题】
(14分) (1)键线式 表示的分子式 _____ ;名称是 。 (2) 中含有的官能团的名称为 。 (3)写出符合分子式为C 5 H 12 的所有同分异构体的结构以及它们的习惯命名: ________________________________________________________________________________________ (4)含有杂质的工业乙醇的蒸馏装置中,玻璃仪器有酒精灯、蒸馏瓶、_________、_________、尾接管、锥形瓶。
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参考答案:
举一反三
【简答题】现金流量表是以收付实现制为基础编制的一张动态报表。( )
【单选题】如在测定离心泵的性能曲线时,错误地将压力表安装在调节阀以后,则操作时压力表示数(表压) P 将
A.
、随真空表读数的增大而减小
B.
、随流量的增大而减小
C.
、随泵实际的扬程的增大而增大
D.
、随流量的增大而增大
【简答题】现金流量表是以收付实现制为基础编制的一张动态报表。 ( )
【单选题】I _____ Ann. You _____ Sam and she _____ Kate. [     ]
A.
is;am;are
B.
am;is;are
C.
am;are;is
D.
is;are;am
【简答题】现金流量表是以收付实现制为基础编制的一张动态报表。( )
【简答题】Ann and Sam are talking about a movie they saw recently. they have different opinions on the movie. Ann: Hi, Sam. Have you seen the movie ________? Sam: Yes, I have. ___________________________? Ann: ...
【简答题】听录音,连图片。 1. Lisa 2. Ann 3. Sam 4. Tom
【单选题】Early on Saturday morning Ann brought her nephew(侄子) Sam to her friends, Bill and Kate, and asked them to look after him for the day. Sam, an independent boy of six years old, had black hair and was w...
A.
living alone
B.
habitually taking actions or decisions alone
C.
earns enough money to live on
D.
not controlled by others
【单选题】According to the talk, what is the relationship between Amy and Ann?
A.
They are colleagues.
B.
They are neighbors.
C.
They are close friends.
D.
They are roommates.
【简答题】If he(listen) ______ to me, he would not be in such trouble now.
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