搜题请搜索小程序“爱下问搜题”
问题 多项选择题

主甲板上的舱口、人孔、门、窗（包括天窗、舷窗）、通风筒、空气管必须全部（）；对各种水密门、窗、舱口、人孔等必要时应进行（），确保水密性能良好。

A.水密密封

B.水压试验

C.修理

D.随时水密封闭

E.检查

答案

参考答案：A, B, D

单项选择题

Visitors to this country are normally admitted for six months, but foreign students can usually stay for one year. They must (54) an educational institution, and they are required to study for a (55) of fifteen hours a week on a daytime course. Prospective students have to show that they can afford their studies, and that they have sufficient (56) resources to support themselves (57) in this country.

In order to work here the foreigner needs a work permit, (58) must be applied for by his prospective employer. The problem here is that the Department of Employment has the right to grant or (59) these permits, and there is little that can be done (60) it; it would be extremely unwise for a foreign visitor to work (61) a permit, since anyone doing so is liable to immediate deportation (驱逐出境). There are some people from the European countries, who are often given (62) residence permits of up to five years. Some other people, such as doctors, foreign journalists, authors and others can work without permits, and foreign students are normally allowed to (63) part-time jobs while they are studying here.

54().

A.establish 

B.purchase 

C.prove 

D.attend
查看答案
单项选择题

中寒证的表现不包括（）。

A.寒滞胃肠

B.寒滞肝脉

C.寒邪束表

D.寒滞心经

E.寒邪客肺
查看答案