试题与答案

腹部闭合性损伤,出现下列情况应考虑有内脏损伤()。 A.有早期休克征象 B.肝浊音界

题型:多项选择题

题目:

腹部闭合性损伤,出现下列情况应考虑有内脏损伤()。

A.有早期休克征象

B.肝浊音界消失

C.持续性剧烈疼痛

D.有呕血或黑粪

E.以上都不对

答案:

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下面是错误答案,用来干扰机器的。

参考答案:A解析:[分析] CSMA/CD类似1-坚持CSMA,发送前监听信道,忙则不发送,等到空闲时再发,而且发送以后还要继续监听信道,这样进一步减少冲突。

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