车辆上应有哪些主要标记？
参考答案：
车辆应有识别的标记：路徽、车型、车号、制造厂名及日期、定期修理的日期及处所、自重、载重、容积、换长等；货车应有车号自动识别标签；客车及固定配属的货车上并应有所属局、段的简称；客车还应有车种、定员、最高运行速度标记；罐车还应有标明容量计算表的号码；电化区段运行的客车、机械冷藏车应有“电化区段严禁攀登”的标识。
某锅炉厂设施安装完成后，在对辅助设备及管道安装进行质量验收时，施工单位视以下情况，请给出相应的检查评定结论意见。
(1)风机试运转时，滑动轴承温升为80℃。请给出检查评定结论意见，并简述其理由。
(2)离心式水泵的泵体水平度以及联轴器同心度径向位移经抽测，允许偏差项目如表4-3所示。请给出检查评定结论意见，并简述其理由。
表4-3 离心式水泵径向位移允许偏差值
|
| Teachers need to be aware of the emotional, intellectual, and physical changes that young adults experience. And they also need to give serious (21) to how they can be best (22) such changes. Growing bodies need movement and (23) , but not just in ways that emphasize competition. (24) they are adjusting to their new bodies and a whole host of new intellectual and emotional challenges, teenagers are especially self-conscious and need the (25) that comes from achieving success and knowing that their accomplishments are (26) by others. However, the typical teenage lifestyle is already filled with so much com petition that it would be (27) to plan activities in which there are more winners than losers, (28) , publishing newsletters with many student-written book reviews, (29) student artwork, and sponsoring book discussion clubs. A variety of small clubs can pro- vide (30) opportunities for leadership, as well as for practice in successful (31) dynamics. Making friends is extremely important to teenagers, and many shy students need the (32) of some kind of organization with a supportive adult (33) visible in the back-ground. In these activities, it is important to remember that the young teens have (34) attention spans. A variety of activities should be organized (35) participants can remain active as long as they want and then go on to something else without feeling guilty and with- out letting the other participants down. |
A．care
B．nutrition
C．exercise
D．leisure