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问题 单项选择题

首次申办通行证人员需参加保荐机构或公安分局组织的不少于（）的空防安全及通行证知识培训，经公安分局考核合格后方可发放通行证。

A.1学时

B.2学时

C.4学时

D.6学时

答案

参考答案：A

单项选择题

某计算机中采用48×48数字化点阵字模表示一个汉字，字模中的每一个点在存储器中用一个二进制位存储。那么，存储1024个汉字要求的存储空间应为（）K字节。

A．196

B．244

C．288

D．312
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单项选择题

On 1 January 2006, an institutional investor’s portfolio is valued at $10000000. The investor wants to make a donation to charity on 31 December 2006, but does not want the year-end portfolio value to fall below $10000000. The expected annual return on the investor’s existing portfolio is 10 percent with a variance of 144. If the investor wants a safety-first ratio of at least 0.5, the maximum amount the investor should plan to donate is closest to:

A．

A. $400000.

B．

B. $500000.

C．

C. $ 600000.
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