国内甲公司从美国进口一批货物，载运该货物的轮船在航行中触礁，由于海水的涌入，不仅使一

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．power

B．rights

C．authorized

D．common

触媒为什么要还原？

安全委员会在促进安全与健康工作环境方面的职务范围包括：进行工地视察、调查意外事故和下列哪一项?

A.聘任安全主任 

B.进行安全审核 

C.协助策划安全计划

男性，25岁，腹部绞痛3h，急诊入院。3小时前于饭后剧烈活动，引起剧烈腹部绞痛。恶心、呕吐，吐物为胃内容，不排便、排气。查体：Bp6．2／4．2kPa（50／30mmHg），P110次／分。急性病容，腹部不对称，右侧膨隆，有压痛，肠鸣音消失，治疗中最重要的是（）

A.输血

B.手术

C.输液

D.抗生素

对于阵发性室上性心动过速，最安全有效的终止办法是

A．静脉滴注腺苷
B．刺激恶心反射
C．卧床休息
D．静脉缓慢推注维拉帕米(异搏定)