简单随机抽样的缺点是(　　)。

[单选题]大便时干时稀多见于：（）

[单选题]用红碎茶冲泡调饮红茶时，用水量一般以每克茶（）为宜。

[单选题]再保险合同的当事人是（）。

[单选题]You are the network administrator for The network consists of a single Activev Directory domain named All client computers run Windows XP Professional. Tess, a user in the Sales staff, reports that she has attempted to log on six times unsuccessfully. Tess reports that she logged on successfully yesterday. You discover that Tess reset her password three days ago to comply with a new security policy that requires strong passwords. The account policies that are applied in the Domain Security GPO are shown in the following table. You need to ensure that the user can log on to the domain. What should you do?（）

[单选题]满页换折正确的说法是（）

[多选题]建筑业最常发生的“五大伤害”事故是指高处坠落、（）。

[多选题]婚姻家庭系统中的两个机制包括（）.

[单选题]109型分配阀工作在初制动位时，开通了列车管到局减室的通路，此时滑阀与阀座的相对位置与（）相通

[名词解释题]惰性气体封舱条款（Inert Gas Gauging Clause）

[单选题]人体内不随意生理活动不包括（）

什么是质量工程师？