测定羰基化合物的常用方法有:羟胺肟化法、2,4-二硝基苯肼称量法、亚硫酸氢钠加成法、

题型:单项选择题

问题:

测定羰基化合物的常用方法有:羟胺肟化法、2,4-二硝基苯肼称量法、亚硫酸氢钠加成法、次碘酸钠氧化法和银离子氧化法。其中()应用较广泛。

A.羟胺肟化法,2,4-二硝基苯肼称量法

B.次碘酸钠氧化法,银离子氧化法

C.羟胺肟化法,亚硫酸氢钠加成法

D.2,4-二硝基苯肼称量法,银离子氧化法

考点:有机化学工程基本有机化工工艺考试基本有机化工工艺考试题库
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用户可以在Eudemon防火墙上自定义安全区域,用户在域配置视图下通常要给自定义的安全区域进行下面哪些内容的配置().

A.设置安全优先级

B.添加接口

C.设置IP地址

D.设置ARP代理

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下列各项中,属于对计算机系统安全控制措施的有()。

A.法律与制度

B.技术措施

C.审计与监控

D.以病毒对抗病毒

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A group of teenagers: they laugh and talk over each other, dance and make faces — you wouldn’t believe they had just played on the same stage as famous American singers Kid Cudi and Eminem.

These seven kids, all under the age of 20, are members of the band Kids These Days (KTD).

Fresh out of high school, the band already has done things that most teens couldn’t even imagine. They played at festivals including the recent SXSW in Austin and Lollapalooza in their hometown, Chicago, to crowds of loyal fans.

KTD uses a mix of hip-hop, jazz, blues and classic rock to make a sound of their own.

“KTD simply mixes most, if not all of my favourite music styles,” said Kamia Jones, as Chicago high school student.“I like that they aren’t afraid to be different and that their music is real and speaks to the soul.”

The band formed two years ago. Now, as well as local fans, they are becoming popular around the world. Their facebook page is filled with supportive posts from admirers from California to Tokyo.

“It’s really strange to me that people from London, Australia and Russia... They have heard

of us and they like our music because it’s really cool feeling,” says Marcie Stewart, who plays keyboard for the band.

Despite their recent fame, KTD is a group of normal teenagers and they remain very close to one another. While talking to the reporters, they dance and make fun of each other.

When asked what advice they would give to other teen musicians, Greg Landfair, KTD’s drummer, said, “Keep your heart in it. Never lose the music and what you are doing, because that’s what you’re here for. Let the music always be first.”

小题1:KTD’s music is popular among teenagers mainly because ________.

A.it is about the strange life of teenagers

B.it mixes many music styles teenagers love into their music

C.all the band members are young and handsome

D.the band members dance and make fun of each other小题2:What do we know about KTD?

A.They are all of the same age.

B.They are as famous as Kid Cudi and Eminem.

C.There are five members in the band.

D.They have fans around the world.小题3:According to Greg, teen musicians should___________.

A.make music close to their lives

B.always think of the needs of the fans

C.love the music they are playing

D.stay close to the group member小题4:The author wrote this article to___________.

A.show the kind of music teenagers love

B.encourage young musicians to play music

C.describe a special music style

D.introduce a successful band of teenagers

题型:单项选择题

犯罪嫌疑人邹某涉嫌故意伤害罪被甲县公安局立案侦查,侦查过程中邹某认为公安机关对被害人所作的伤情鉴定不公正,下列邹某可选择的做法正确的是哪一项( )

A.自行重新鉴定

B.申请县公安局局长批准后补充鉴定或重新鉴定

C.向县检察机关提出异议

D.向上级公安机关提出异议

题型:单项选择题

韩国政府利用位置信息和通话记录数据,规划出合理的公交线路,提升了政府科学决策和公共服务水平,提高了公众满意度。

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