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问题 多项选择题

下列有关系统组件安装要求说法正确的是（）。

A.灭火剂储存装置安装后，泄压装置的泄压方向应朝向操作面

B.采用螺纹连接的选择阀，其与管网连接处宜采用活接

C.集流管上的泄压装置的泄压方向不应朝向操作面

D.水平管道采用管卡固定，管卡的间距不宜大于0.6m

E.气动驱动装置的管道安装后，要进行吹扫试验

答案

参考答案：B, C, D

解析：本题考查的是系统组件安装。A错，灭火剂储存装置安装后，泄压装置的泄压方向不应朝向操作面；E错，气动驱动装置的管道安装后，要进行气压严密性试验。故此题答案选B、C、D。

选择题

16、17世纪对我国进行殖民侵略的国家有（    ）

①英国  ②西班牙  ③葡萄牙  ④荷兰  ⑤法国

A．③④

B．②③④

C．①②④

D．①②③④⑤
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填空题



Americans have four primary avenues for making friends: at work, at school, through a hobby or a (1) such as volunteer work and discussion group, or through a family or (2) .
In American culture, a job is more than the work that one performs between the hours of 9 a.m. and (3) . Work becomes a major socializing influence. Many young mothers who (4) their jobs to care for small children remark on the loneliness of their new lifestyles because they have lost their forum for (5) .
A great number of American employers recognize business social (6) and use it to build a family atmosphere on the job so that employees will feel (7) in their work environment. Some employers arrange company get-togethers in their home or at a (8) . American companies have at least one (9) annually, usually at Christmas time. Many corporations have (10) where employees and administrators alike dress (11) to play games such as baseball and volleyball.
Top American administrators often hold social gatherings (12) . Depending upon the size of the employer’s home and the number of (13) . These social gatherings may be picnics, pool parties, or (14) . If the company is large, an employer may hold what Americans call (15) . For an open house, the employer will invite his employees to come to his home (16) between 1 p.m. on a certain day. Those invited usually stay for (17) , chatting with the other guests and their host. People come and go (18) during the designated hours, and the host keeps refreshments, usually (19) or hors d’oeuvres and beverages, available for all who come. For such social gatherings, it is considered (20) the invitation unless you have an excellent reason.
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