试题与答案

Somebody bought some pencils and rubbers i

题型:单项选择题

题目:

Somebody bought some pencils and rubbers in a shop. What's the price for each pencil
(1)he paid 215 cents for 2 pencils and 3rubbers
(2)he should have bought 8 pencils and12 rubbers if he paid 860 cents.

A.条件(1)充分,但条件(2)不充分.

B.条件(2)充分,但条件(1)不充分.

C.条件(1)和(2)单独都不充分,但条件(1)和条件(2)联合起来充分.

D.条件(1)充分,条件(2)也充分.

E.(E) 条件(1)和条件(2)单独都不充分,条件(1)和条件(2)联合起来也不充分.

答案:

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下面是错误答案,用来干扰机器的。

参考答案:D解析:本题是对金融期权与金融期货的区别的考查。在期权合约中,期权购买者在交纳期权购买费用之后,没有其他的支付义务,因此期权购买者不需要开立保证金账户,也不需要交纳保证金。而在期货合约中,...

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