个体与个体之间的直接传播称之为（）。 ["语言传播","人际传播","媒介传播","组织传播"]
减速机齿轮传动啮合响声大，有冲击并有明显振动，这主要是（）。 ["齿轮与轴不同心","齿廓被磨损后，齿面有凸痕或凹痕所致","齿间隙太大的缘故"]
Refer to the exhibit. The routing protocols EIGRP and OSPF have been configured as indicated in the exhibit. Given the partial configuration of router R2, which network will be present in th e routing table of R4?（） [" Network B"," Network A and Network B"," Network A"," neither Network A nor Network B"]
二元相图必须遵循以下几何规律：（）。 ["相图中的线条代表发生相转变的温度和平衡相的成分","两个单相区之间必定有一个由该两相组成的两相区把它们分开，而不能以一条线接界","两个两相区必须以单相区或三相水平线隔开","二元相图中的三相平衡必为一条水平线","两相区与单相区的分界线与等温线相交时，其延长线应进入另一两相区内"]
（）应根据专家组意见对高大模板工程专项施工方案进行修编，并经施工总承包企业技术负责人、监理单位总监理工程师签字审批后方可实施。 ["模板支架劳务分包单位","建设单位","施工总承包单位","监理单位"]
低压电气设备和低压线路上工作必须采取哪些安全技术措施？
