下列不属于并开药名的是（） A.二母 B.龙牡 C.茯神木 D.白蒺藜

高血钾时心电图的变化有（）

A.S-T段下降

B.T波高而尖，PR间期延长

C.出现U波

D.QRS间期缩短，QT时间延长

E.T波宽而低平，重者T波倒置

销售准备工作前至少包括哪三个方面。（）

A.产品知识、客户资料、消费行为

B.产品知识、客户资料、自我态度

C.产品知识、消费行为、自我态度

D.客户资料、自我态度、消费行为

以下关于集气罐和自动排气阀的说法不正确的是( )。

A．在较大采暖系统中，为方便管理，宜采用自动排气阀
B．在重力式热水供暖系统中，当膨胀水箱接在供水主立管端部，且干管顺坡布置时，利用膨胀水箱排气，可不再另设集气罐
C．为便于检修，应在连接管上设一闸阀，系统运行时该阀应开启，有条件时，可在自动排气阀前加设Y型过滤器
D．集气罐的直径口应大于或等于干管管径的3～5倍

Shopping habits in the United States have changed greatly in the last quarter of the 20th century. （1） in the 1900s most American towns and cities had a Main Street. Main Street was always in the heart of a town. This street was （2） on both sides with many （3） businesses. Here, shoppers walked into stores to look at all sorts of merchandise: clothing, furniture, hardware, groceries. （4）,some shops offered （5） .These shops included drugstores, restaurants, shoe-repair stores, and barber or hairdressing shops. （6） in the 1950s, a change began to （7） .Too many automobiles had crowded into Main Street （8） too few parking places were （9） shoppers. Because the streets were crowded, merchants began to look with interest at the open spaces （10） the city limits. Open space is what their car-driving customers needed. And open space is what they got （11） the first shopping centre was built. Shopping centres, or rather malls, （12） as a collection of small new stores （13） crowded city centres. 14 by hundreds of free parking space, customers were drawn away from （14） areas to outlying malls. And the growing （16） of shopping centres led （17） to the building of bigger and betterstocked stores. （18） the late 1970s,many shopping malls had almost developed into small cities themselves. In addition to providing the （19） of one stop shopping, malls were transformed into landscaped parks, （20）benches, fountains, and outdoor entertainment.

请在9处填上正确答案（）

A.available for

B.available to

C.used by

D.ready for

统计调查对象中，必须取得统计从业资格、持有统计从业资格证书的人员是______。

A．法定代表人
B．统计负责人
C．会计人员
D．承担经常性政府统计调查任务的人员