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问题 单项选择题

在对某工厂职业人群进行体检时，发现某种常见病的发病率明显高于一般人群，此种疾病很可能是（）

A.职业病

B.传染病

C.工作有关疾病

D.公害病

E.以上都不是

答案

参考答案：C

单项选择题

Using the following assumptions, calculate the rate of return on a margin transaction for an investor who purchases the stock and the stock price at which the investor who shorts the stock will receive a margin call. Market Price Per Share: $25 Number of Shares Purchased: 1000 Holding Period: 1 year Ending Share Price: $22 Initial Margin Requirement: 50% Maintenance margin: 25% Transaction and borrowing costs: $0 The company pays no dividends What of the following choices is closest to the correct answer The margin transaction return and margin call are: Margin Transaction ReturnMargin Call（）①A. -24.00% $16.67 ②B. -12.00% $16.67 ③C. -24.00% $30.00

A. ①

B. ②

C. ③
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单项选择题

关于大连接体的要求正确的是

A．根据情况设置大小、外形及厚度

B．宽4mm

C．宽3mm

D．厚4mm

E．厚3mm
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