拔除下颌牙时，病员的头位应为（） A．头后仰使下颌面与地面成90°角 B．头后仰使下

下列叙述错误的是（　　）

A．打开浓盐酸的试剂瓶盖，瓶口出现白雾

B．稀硫酸、稀盐酸都可以用于金属表面除锈

C．利用洗涤剂的乳化功能可洗去餐具上的油污

D．把碳酸氢铵和农家肥料草木灰（碱性，主要成分碳酸钾）混合使用，既能降低成本，又能提供氮、钾两种营养元素

在对非确定型决策问题进行分析时，当决策者偏于保守稳妥，不愿承担更大风险时，一般采用的决策方法为( )。

A．最小最大后悔值法
B．最大调整收益法
C．最大最大收益值法
D．最大最小收益值法

运用社会意识的反作用原理，说明我国当前加强思想道德建设的重要意义。

Most computer systems are (66) to two different groups of attacks: Insider attacks and outsider attacks. A system that is known to be (67) to an outsider attack by preventing (68) from outside can still be vulnerable to the insider attacks accomplished by abusive usage of (69) 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 (70) by tools referred to as Intrusion Detection Systems.

（66）处填（）。

A．vulnerable

B．week

C．sensitively

D．helpless

1959年，联合国第14届全体会议通过了（），标志着幼儿教育各国政府国际合作的开端。