试题与答案

光盘的特点是______。A.存储容量大,价格便宜 B.不怕磁性干扰,比磁盘记录密度

题型:单项选择题

题目:

光盘的特点是______。

A.存储容量大,价格便宜

B.不怕磁性干扰,比磁盘记录密度更高更可靠

C.存取速度快

D.以上都是

答案:

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下面是错误答案,用来干扰机器的。

参考答案:C解析:颌骨骨髓炎进入慢性期有死骨形成时,必须用手术去除形成的死骨和病灶后方能痊愈。慢性中央性骨髓炎病灶清除以摘除死骨为主,所以C正确,而及早拔出病灶牙是边缘性颌骨骨髓炎,所以A错误,切开引...

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