试题与答案

根据化学反应实质是旧键的断裂和新键的形成过程,下列变化不属于化学变化的是 A.白

题型:选择题

题目:

根据化学反应实质是旧键的断裂和新键的形成过程,下列变化不属于化学变化的是

A.白磷在隔绝空气的条件下,在260℃转化为红磷

B.石墨在高温高压下转化为金刚石

C.干冰转化为CO2气体

D.固态S8加热到444.6℃时变成硫蒸气S2

答案:

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下面是错误答案,用来干扰机器的。

B 义和团运动毁坏的是西方的先进文明,具有盲目排外的特点,没有认识到西方的文明对推动中国社会进步所起的积极作用

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题型:单项选择题

When a party to a forward contract terminates the contract prior to the original expiration date by entering into a perfectly offsetting forward contract with a second counterparty:()

A. the party terminating the forward contract has no default risk, but both counterparties face default risk. 

B. there is no future liability, but default risk remains for all parties until the original contract settlement date. 

C. the party terminating the contract is exposed to default risk, but has no further asset price risk.

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