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问题 单项选择题

下列不属于资本资产定价模型的假设条件的是( )。

A．每一种资产无限可分

B．所有投资者的投资期限皆不同

C．资本市场不可分割，市场信息免费

D．对所有投资者而言无风险利率相同

答案

参考答案：B

问答题 简答题

职业病危害因素都有那些？
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单项选择题

In the following essay, each blank has four choices. Choose the most suitable one from the four choices and write down in the answer sheet. There are two types of key technology: private key and public key. Private-key encryption methods are called (71) ciphers, information is encrypted with (72) both the sender and receiver hold privately. Public-key encryption methods are called (73) ciphers, (74) created for each user, encryption key and decryption key are (75)

A．a key

B．two keys

C．three keys

D．four keys
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