皮皮学，免费搜题
登录
logo - 刷刷题
搜题
【单选题】
患者，男，55岁。劳累及情绪激动后，多次出现短时间胸骨后疼痛，下列哪项血清检查对明确诊断最有参考意义
A.
钾
B.
钠
C.
氯化物
D.
钙
E.
胆固醇及甘油三脂
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案：
举一反三
【单选题】同分异构现象在有机化合物中是非常普遍的。下列各组化合物中互为同分异构体的是 ①CH 3 CH 2 CH 2 CH 3 和(CH 3 ) 2 CHCH 3 ；         ②CH 3 CH 2 OH和CH 3 CH 2 CH 2 OH； ③CH 3 COOCH 2 CH 3 和CH 3 CH 2 CH 2 COOH； ④CH 3 CH=CHCH 3 和CH 3 CH 2 CH=CH 2 ； ⑤ ...
A.
①②④
B.
①③⑤
C.
①③④⑤
D.
①③④
查看完整题目与答案
【多选题】下列各组化合物中互为同分异构体的是()。
A.
己烷和2,2-二甲基丁烷
B.
2,2-二甲基丁烷和2-甲基己烷
C.
2-甲基己烷和2,2-二甲基戊烷
D.
戊烷和2,2-二甲基戊烷
查看完整题目与答案
【单选题】下列各组化合物中互为同分异构体的是.( )
A.
丁烷和1-丁烯
B.
1-丁烯和1-丁炔
C.
丁炔和1,3-丁二烯
D.
丁烯和丁炔
查看完整题目与答案
【单选题】听力原文：W: Can you speak up a little? I'm having difficulty hearing you. M: All right. Is that better? Q: What can we conclude from the talk? (4)
A.
The woman doesn't like the man.
B.
The man tries to speak more loudly.
C.
The man doesn't want to speak up.
D.
The woman has no problem hearing the man.
查看完整题目与答案
【单选题】某批发企业销售甲商品,第三季度各月预计的销售量分别为1000件、1200件和1100件,企业计划每月月末商品存量为下月预计销售量的20%,下列各项预计中不正确的是( )
A.
8月份期初存货为240件
B.
8月份采购量为1180件
C.
8月份末存货为220件
D.
第三季度采购量为3300件
查看完整题目与答案
【多选题】Which ones of the following expessions coud you use before paraphrasing others' meaning?
A.
So, what you are saying is that.
B.
If i'm hearing you correctly， you mean.
C.
To put it another way, you mean.
D.
In other words.
查看完整题目与答案
【单选题】Man: Can you come over for dinner tonight? Woman: I'm up to my ears in work, so I'll have to take a rain check. Question: What does the woman mean?
A.
She wants to check the weather before deciding.
B.
She has a problem with her hearing.
C.
She'd enjoy coming to dinner another time.
D.
She wants the man to help her with some work.
查看完整题目与答案
【单选题】听力原文：Hello, Ms. Lee. This is Aaron Parks from Axis Corporation. I'm calling to let you know that your presentation yesterday impressed us all. We'd like you to send us a price quote for the Branden pr...
A.
A new product to be launched,
B.
An upcoming presentation.
C.
A date for completion of work.
D.
A bid for a project.
查看完整题目与答案
【判断题】史学界大部分学者对乾隆皇帝的评价不高。()
A.
正确
B.
错误
查看完整题目与答案
【单选题】E-mail From: Megan Campbell To: Marta Apter Marta: I'm sorry I didn't respond to your e-mail earlier. I had a problem with my e-mail system for a few days, and I wasn't able to retrieve new messages. ...
A.
To apologize to Marta for not finishing an assignment
B.
To tell Marta she will accept an assignment
C.
To tell Marta she will be unable to complete an assignment on time
D.
To explain to Marta her problems with an assignment
查看完整题目与答案
相关题目：
【单选题】同分异构现象在有机化合物中是非常普遍的。下列各组化合物中互为同分异构体的是 ①CH 3 CH 2 CH 2 CH 3 和(CH 3 ) 2 CHCH 3 ；         ②CH 3 CH 2 OH和CH 3 CH 2 CH 2 OH； ③CH 3 COOCH 2 CH 3 和CH 3 CH 2 CH 2 COOH； ④CH 3 CH=CHCH 3 和CH 3 CH 2 CH=CH 2 ； ⑤ ...
A.
①②④
B.
①③⑤
C.
①③④⑤
D.
①③④
查看完整题目与答案
【多选题】下列各组化合物中互为同分异构体的是()。
A.
己烷和2,2-二甲基丁烷
B.
2,2-二甲基丁烷和2-甲基己烷
C.
2-甲基己烷和2,2-二甲基戊烷
D.
戊烷和2,2-二甲基戊烷
查看完整题目与答案
【单选题】下列各组化合物中互为同分异构体的是.( )
A.
丁烷和1-丁烯
B.
1-丁烯和1-丁炔
C.
丁炔和1,3-丁二烯
D.
丁烯和丁炔
查看完整题目与答案
【单选题】听力原文：W: Can you speak up a little? I'm having difficulty hearing you. M: All right. Is that better? Q: What can we conclude from the talk? (4)
A.
The woman doesn't like the man.
B.
The man tries to speak more loudly.
C.
The man doesn't want to speak up.
D.
The woman has no problem hearing the man.
查看完整题目与答案
【单选题】某批发企业销售甲商品,第三季度各月预计的销售量分别为1000件、1200件和1100件,企业计划每月月末商品存量为下月预计销售量的20%,下列各项预计中不正确的是( )
A.
8月份期初存货为240件
B.
8月份采购量为1180件
C.
8月份末存货为220件
D.
第三季度采购量为3300件
查看完整题目与答案
【多选题】Which ones of the following expessions coud you use before paraphrasing others' meaning?
A.
So, what you are saying is that.
B.
If i'm hearing you correctly， you mean.
C.
To put it another way, you mean.
D.
In other words.
查看完整题目与答案
【单选题】Man: Can you come over for dinner tonight? Woman: I'm up to my ears in work, so I'll have to take a rain check. Question: What does the woman mean?
A.
She wants to check the weather before deciding.
B.
She has a problem with her hearing.
C.
She'd enjoy coming to dinner another time.
D.
She wants the man to help her with some work.
查看完整题目与答案
【单选题】听力原文：Hello, Ms. Lee. This is Aaron Parks from Axis Corporation. I'm calling to let you know that your presentation yesterday impressed us all. We'd like you to send us a price quote for the Branden pr...
A.
A new product to be launched,
B.
An upcoming presentation.
C.
A date for completion of work.
D.
A bid for a project.
查看完整题目与答案
【判断题】史学界大部分学者对乾隆皇帝的评价不高。()
A.
正确
B.
错误
查看完整题目与答案
【单选题】E-mail From: Megan Campbell To: Marta Apter Marta: I'm sorry I didn't respond to your e-mail earlier. I had a problem with my e-mail system for a few days, and I wasn't able to retrieve new messages. ...
A.
To apologize to Marta for not finishing an assignment
B.
To tell Marta she will accept an assignment
C.
To tell Marta she will be unable to complete an assignment on time
D.
To explain to Marta her problems with an assignment
查看完整题目与答案
参考解析：
知识点：
题目纠错 0
发布
创建自己的小题库 - 刷刷题