对工厂现患肺癌职工发病病因的调查属于（） A.横断面调查 B.病例-对照调查 C.队

Most computer systems are (26) to two different groups of attacks: Insider attacks and outsider attacks. A system that is known to be (27) to an outsider attack by preventing (28) from outside can still be vulnerable to the insider attacks accomplished by abusive usage of (29) users. Detecting such abusive usage as well as attacks by outsides not only provides information on damage assessment, but also helps to prevent future attacks. These attacks are usually (30) by tools referred to as Intrusion Detection Systems.

A．vulnerable

B．week

C．sensitively

D．helpless

下面两个句子中各有一处语病，请修改。

（1）命运之神给他的第一个惊喜首先是找到一份称心的工作。

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（2）为迎接“世界读书日”，学校开展了“我爱读书”，同学们都积极参加。

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编制预算定额人工消费指标时，下列人工消耗量属于人工幅度差用工的有()。

A.施工过程中水电维修用工 

B.隐蔽工程验收影响的操作时间 

C.现场材料水平搬运用工 

D.现场材料加工用工 

E.现场筛砂子增加的用工量

就绩效考核而言，新公共管理的突出特点是强调顾客和（）导向。

A.结果

B.过程

C.投入

D.分权

一回羽状复叶