One solution to major security problem is_爱下问搜题

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问题单项选择题

One solution to major security problem is __( )__ ，which are frequently installed to fix known security holes.

A．patches

B．compensations

C．complements

D．additions

答案

参考答案：A

选择题

下列各组中顺序的排列不正确的是（　　）

A．酸性：HClO₄＞H₂SO₄＞H₃PO₄＞H₂SiO₃

B．稳定性：HF＞H₂O＞H₂S

C．碱性：KOH＞NaOH＞Mg（OH）₂

D．熔沸点：HI＞HBr＞HCl＞HF

判断题

回流量波动可能引起脱乙烷塔压力波动，回流温度的波动不会引起脱乙烷塔压力波动。