在潮湿环境或在金属容器内部进行施焊，行灯电压为（）V。

[单选题]为减少体表和正常组织的照射剂量，提高靶区剂量，应选用哪种给角照射方式（　）

[问答题]同事之间应当如何相处？

[单选题]配置测试中，我们需设计在每一种配置中执行的测试方案，下面内容中不属于方案内容的是（）。

[单选题]哪组牙根尖距上颌窦底壁最近？（　　）

[多选题]关于基金周转率的说法，正确的是（）。

[单选题]轻型消防车消防车底盘的厂定最大总质量大于（），但不大于（）的消防车

[问答题]简述德鲁克目标管理的先决条件及其实施阶段。

[单选题]请阅读 Passage l,完成第 21~25小题。                                      Passage1   In his book The Tipping Point, Malcolm Gladwell argues that   "social epidemics" are driven in largepart by the actions of a tiny minority of special individuals, often calledinfluentials, who are unusually informed, persuasive, or well-connected. Theidea is intuitively compelling, but it doesn't explain how ideas actuallyspread.    The supposed importance of influentials derives from a plausible-soundingbut largely untested theory called the "two-step flow ofcommunication": Information flows from the media to the influential andfrom them to everyone else. Marketers have embraced the two-step flow becauseit suggests that if they can just find and influence the influentials, those selectedpeople will do most of the work for them. The theory also seems to explain thesudden and unexpected popularity of certain looks, brands, or neighborhoods. Inmany such cases, a cursory search for causes finds that some small group ofpeople was wearing  promoting, or developingwhatever it is before anyone else paid attention. Anecdotal evidence of thiskind fits nicely with the idea that only certain special people can drivetrends.    In their recent work，however，some researchers have come up with the finding that influential havefar less impact on social epidemics than is generally supposed. In fact, theydon 't  seem to be required of all.The researchers ' argument stems from a simple observation aboutsocial influence: With the exception of a few celebrities like OprahWinfrey-whose outsize presence is primarily a function of media, notinterpersonal, influence-even the most influential members of a populationsimply don't interact with that many others. Yet it is precisely these non-celebrityinfluentials who，according to the two-step-flow theory, are supposed to drive socialepidemics, by influencing their friends and colleagues directly.  For a social epidemic to occur, however, eachperson so affected must then influence his or her own acquaintances，who must intum influence theirs, and so on; and just how many others pay attention to eachof these people        has little to do with the initialinfluential. If people in the network just two degrees removed from the initialinfluential prove resistant. for example, the cascade of change won ' tpropagate very far or affect many people.    Building on the basic truth aboutinterpersonal influence, the researchers studied the dynamics of social influenceby conducting thousands of computer simulations of populations, manipulating a numberof variables relating to people's ability to influence others and theirtendency to be influenced.  They foundthat the principal requirement for what is called    "global cascades"---the widespreadpropagation of influence through networks—is the presence not of a few influentials but ,rather, of a critical mass of easilyinfluenced people.By citing the book The Tipping Point, the author intends to_____

[单选题]青蒿的抗疟有效成分是（）

[判断题]茶叶的分类中，主要指绿茶、红茶、乌龙茶、白茶、黄茶、黑茶六大类。

[单选题]在潮湿环境或在金属容器内部进行施焊，行灯电压为（）V。

[单选题]在潮湿环境或在金属容器内部进行施焊，行灯电压为（）V。

[单选题]在潮湿环境或水下环境中，以下可以优先使用的水泥是（）。

[判断题]铜在潮湿的环境中比在干燥的环境中更耐腐蚀。

[单选题]下列能在潮湿环境中使用的材料有（）

[单选题]不能用于潮湿环境的布线是（）。

[判断题]在潮湿地区或在金属架构、压力容器、管道等导电良好的场所作业时，必须使用双重绝缘或加强绝缘的电动工具。

[判断题]仙客来性喜潮湿、阴凉的环境。

[单选题]潮湿环境应选用润滑脂。（）

[单选题]在潮湿的环境中，安全电压在（），甚至12V以下。