下面哪些属于股东大会的职能？（）A.更换董事 B.审议监事会报告 C.审议银行年度财

著名的意大利比萨斜塔倾斜的主要原因是（）。

A.塔底地层下陷的缘故

B.受到地震的影响

C.常年遭受飓风吹袭的结果

D.钟塔的木料砖石年久破损

Visitors to this country are normally admitted for six months, but foreign students can usually stay for one year. They must (52) an educational institution, and they are required to study for a (53) 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 (54) resources to support themselves (55) in this country.

In order to work here the foreigner needs a work permit, (56) must be applied for by his prospective employer. The problem here is that the Department of Employment has the right to grant or (57) these permits, and there is little that can be done (58) it; it would be extremely unwise for a foreign visitor to work (59) 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 (60) 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 (61) part-time jobs while they are studying here.

58().

A.for 

B.on 

C.about 

D.with

最早在大学里讲授教育学的学者是杜威。( )

关于回波次数的描述，错误的是（）

A.回波次数即回波时间

B.多次回波峰值点连成的曲线，即T2衰减曲线

C.回波次数增多时间延长

D.多回波次数一般到4次

E.回波峰值一次比一次低