理论塔板数的大小说明组分在柱中反复分配平衡次数的多少, 理论塔板数越大,平衡次...

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理论塔板数的大小说明组分在柱中反复分配平衡次数的多少, 理论塔板数越大,平衡次数越多,组分与固定液的相互作用力越明显,柱效越高。

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举一反三

【单选题】以下关于普萘洛尔的叙述错误的是

又名心得安

临床上用其外消旋体

其左旋体活性强

遇光易氧化变质

为选择性的β受体阻断剂

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【单选题】（）干茶色泽灰绿或黛绿，芽毫银色显露，叶背满披白毫银亮，绿面白底，故有“青天白地”之称。

白牡丹

贡眉

寿眉

金牡丹

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【单选题】__________ win the most gold medals in the 2012 Olympic Games, the Chinese athletes are busy training.

In order to

In order that

So as to

So that

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【单选题】The one-year course is only to__________ the foundations of good technical training.

lead to

let down

come to

lay down

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【单选题】To qualify for such a position, the native would first have to receive specialized training, and this is ______.

refused

discouraged

denied

forbidden

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【单选题】下列关于普萘洛尔的叙述错误的是

久用停药后应逐渐减量

适用于变异型心绞痛

有的药剂量个体差异大

适用于治疗劳累型心绞痛

伴有哮喘的心绞痛患者不宜使用

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【单选题】下列句子中,没有语病的一项是( )

时光的流逝不能让我淡忘对故乡浓浓的思念,反之,随着年龄的增长,对故乡的思念愈发日久弥坚。

省委省政府认真总结了造成这种落后状况的教训,确立了科教兴市的工作思路。

自2004年中国移动成为北京2008年奥运会移动通信服务合作伙伴以来,时刻以宣传奥运,弘扬中华为己任。

围绕“农民增收”这一目标,该信用社大力支持农村特色经济的发展,重点向特色化、优质化、技术化农户优先发放贷款。

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【单选题】以下关于普萘洛尔的叙述错误的是

又名心得安

分子结构中含有手性碳原子

临床上用其外消旋体

其右旋体活性强

为非选择性的β受体阻断剂

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【单选题】The key to introducing computers to classroom teaching is through ______.

teacher training

curriculum design

software development

hardware purchase

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【单选题】Allen and Beatrice Gardener managed to communicate with the chimpanzee by ______.

training the chimpanzee to learn human language in an entirely new method

creating a language both man and the chimpanzee were able to use

using animal's local language which the chimpanzee was able to understand

learning the chimpanzee's language with an entirely new approach

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相关题目：

查看完整题目与答案

【单选题】（）干茶色泽灰绿或黛绿，芽毫银色显露，叶背满披白毫银亮，绿面白底，故有“青天白地”之称。

查看完整题目与答案

【单选题】__________ win the most gold medals in the 2012 Olympic Games, the Chinese athletes are busy training.

查看完整题目与答案

【单选题】The one-year course is only to__________ the foundations of good technical training.

查看完整题目与答案

【单选题】To qualify for such a position, the native would first have to receive specialized training, and this is ______.

查看完整题目与答案

查看完整题目与答案

【单选题】下列句子中,没有语病的一项是( )

时光的流逝不能让我淡忘对故乡浓浓的思念,反之,随着年龄的增长,对故乡的思念愈发日久弥坚。

省委省政府认真总结了造成这种落后状况的教训,确立了科教兴市的工作思路。

自2004年中国移动成为北京2008年奥运会移动通信服务合作伙伴以来,时刻以宣传奥运,弘扬中华为己任。

围绕“农民增收”这一目标,该信用社大力支持农村特色经济的发展,重点向特色化、优质化、技术化农户优先发放贷款。

查看完整题目与答案

查看完整题目与答案

【单选题】The key to introducing computers to classroom teaching is through ______.

查看完整题目与答案

【单选题】Allen and Beatrice Gardener managed to communicate with the chimpanzee by ______.

training the chimpanzee to learn human language in an entirely new method

creating a language both man and the chimpanzee were able to use

using animal's local language which the chimpanzee was able to understand

learning the chimpanzee's language with an entirely new approach

查看完整题目与答案

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