地漏清洁时，是否能打开小封？如何避免相关风险？

An architectural style defines as a family of such systems in terms of a（71） of structural organization. More specifically, an architectural style defines a vocabulary of（72） and connector types, and a set of（73）on how they can be combined. For many styles there may also exist one or more（74）that specify how to determine a system’s overall properties from the properties of its parts. Many of architectural styles have been developed over the years.The best-known examples of（75）architectures are programs written in the Unix shell.

A．semantic models

B．weak entities

C．data schemas

D．business models

Losing a job or not being able to find one almost always brings unwelcome changes. If you’ve lost a job, the first feeling is often one of shock. On top of the loss of income, many people find the whole routine of their life is shattered, their contact with other people reduced, their ambitions halted and their identity as a worker removed.
There may be good feelings too—it’s nice to be able to lie in bed in the morning, to spend more time with children, or to have more time to think—a better job may be just around the corner. But, unless a better job does turn up, chances are the days start getting longer and the time becomes harder to fill. Many people pass through periods of difficulty in sleeping and eating. They feel irritable and depressed, often isolated and lonely.
Despite all these problems, unemployment can be a chance for a fresh start. You can discover that it provides an opportunity to sort out or rethink what you want from life and how best you can get it. You can use the time to plan how to find a new job, learn a new skill, develop your hobbies, see if you can run your own business, do some voluntary work in your community or meet new people. It’s up to you.

According to the passage, continuing unemployment may cause ______.

A．absence of humot

B．lack of interest

C．waste of time

D．loss of appetite

关于覆盖义齿附着体叙述错误的是（）.

A.制作简单易于维修

B.费用较高

C.义齿局部基托变薄易折裂

D.颌间距离有限时排牙困难

E.对口腔卫生维护要求较高

升、降国旗时，掌旗员应当面向国旗行什么礼节？

下列药物不属于心境稳定剂的是（）

A.碳酸锂

B.拉莫三嗪

C.丙戊酸钠

D.卡马西平

E.SSRIs