下图为日本及其附近海域震源深度分布示意图。读图回答1—2题。

搜题请搜索小程序“爱下问搜题”

问题选择题

1、日本及其附近海域震源深度的分布特点是[ ]

A．由北向南深度增大

B．由南向北深度增大

C．由西向东深度增大

D．由东向西深度增大

2、2011年3月11日，日本以东海域发生了9级地震，福岛核电站遭受破坏，其泄露的污染物随洋流扩散的主要方向是[ ]

A．西南

B．东北

C．西北

D．东南

答案

1、D

2、B

单项选择题

College librarian: Until three years ago, nonstudents used the library without charge. Then, because of our decreased budget, they were asked to pay $100 per year. Nevertheless, about 150 nonstudents still use the library without paying. We will therefore gain financially if we hire a guard to identify nonstudents and ensure that they have paid the fee.
Which of the following would it be most important to know in order to evaluate the librarian’s conclusion

A．The number of students who use the library annually.

B．The library’s budget this year.

C．Whether the library has installed an expensive computerized cataloging system.

D．How much the library’s budget was decreased three years ago.

E．(E) The annual cost to the library of hiring a guard.

查看答案

单项选择题

模板及支撑支设时应符合的要求是( )。

A．位置正确

B．足够的强度、刚度和稳定性

C．施工方便、不漏浆

D．以上三项

查看答案