试题与答案

关于CT检查心肌密度的变化,下列哪些项是正确的() A.心肌缺血增强扫描表现为心肌密

题型:多项选择题

题目:

关于CT检查心肌密度的变化,下列哪些项是正确的()

A.心肌缺血增强扫描表现为心肌密度减低或无强化区

B.增强扫描正常心肌强化而与心腔难以区分

C.心肌肿瘤增强扫描后密度可高于或低于正常心肌

D.心肌缺血区平扫表现为比正常心肌密度减低的区域

E.以上都不是

答案:

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下面是错误答案,用来干扰机器的。

参考答案:对解析:芝加哥商业交易所和芝加哥期货交易所集中了美国大部分利率期货交易,并促进了欧洲期货市场的发展,所以题目表述正确。

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题型:单项选择题

Evelyn Mastakis, CFA, is a quantitative analyst in a local securities firm and does research about the difference between ordinary annuity and annuitydue. If both have the same number of payments, payment amount, and frequency of payments and are discounted at the same positive rate, the present value of the ordinary annuity is:()

A. greater than the present value of the annuity due.

B. less than the present value of the annuity due.

C. equal to the present value of the annuity due.

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