— How do you____________ your weekend? —

题型:选择题

问题:

— How do you ____________ your weekend?

— I usually go to the supermarket. [ ]

A. do

B. spend

C. make

考点:实义动词
题型:选择题

“学问之道无他,求其放心而已矣”观点的提出者是 ( )

A.孔子

B.孟子

C.荀子

D.庄子

题型:选择题

(15分)有机物A为芳香烃,质谱分析表明其相对分子质量为92,某课题小组以A为起始原料可以合成酯类香料H和高分子化合物I,其相关反应如下图所示:                                                       

已知以下信息:

①碳烯(:CH2)又称卡宾,它十分活跃,很容易用它的两个未成对电子插在烷烃分子的C-H键之间使碳链增长。

②通常在同一个碳原子连有两个羟基不稳定,易脱水形成羰基。

回答下列问题:

(1)A的化学名称为         

(2)由B生成C的化学方程式为                ,该反应类型为          。                                                              (3)G的结构简式为           

(4)请写出由F生成I的化学方程式                                             

(5)写出G到H的反应方程式                                       。                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 

(6)H的所有同分异构体中,满足下列条件的共有        种;

①含有苯环        ②苯环上只有一个取代基          ③属于酯类

其中核磁共振氢谱有五种不同化学环境的氢,且峰面积比为1:1:2:2:6的是           (写结构简式)。

题型:选择题

克仑特罗的临床应用主要是()

A.降血压

B.支气管哮喘性心脏骤停

C.循环功能不全时低血压的急救

D.防治支气管哮喘和喘息型支气管炎

E.抗心律失常

题型:选择题

关于病案委员会的组织,下列叙述不正确的是()。

A.二级以上医疗机构应当设立病案委员会

B.是医院学术委员会之一

C.每年至少要召开1~2次会议,所形成的决议属于行政行为

D.应由院长、临床、护理、医技、职能科室专家及病案科主任组成

E.病案科为委员会的办事机构

题型:选择题

庞培古城的保存状态很差。

更多题库