建设工程项目决策分析的主要内容有______。 A．确定投资目标 B．议定工程投资的

代理人因病死亡或丧失民事行为能力，委托代理( )。

A．可由其他人继续

B．可由法院接替被委托

C．代理人可由亲属接替

D．终止

反渗透复合膜的脱盐层的材质是醋酸纤维素。

早期肠套叠的非手术疗法是()

A．颠簸疗法 

B．钡剂灌肠复位 

C．早期开始氧气疗法 

D．口服植物油 

E．单纯胃肠减压

Most computer systems are (16) to two different groups of attacks: Insider attacks and outsider attacks. A system that is known to be (17) to an outsider attack by preventing.
(18) from outside can still be vulnerable to the insider attacks accomplished by abusive usage of (19) 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 (20) by tools referred to as Intrusion Detection Systems.

A．power

B．tights

C．authorized

D．common

当锅炉补给水水源温度较低，影响（）效果时，应采取生水自动调节加热措施。

A.除盐

B.预处理

C.过滤