Once it was considered good to keep the
car engine idle a minute or two following cold stars. Today, with modern
technology, the opposite is true. An engine operating under road conditions will
warm up faster and run more efficiently than one that is idling. Idling just
burns gas (on average, about a gallon an hour). When you have a full tank of gas, park the car facing downhill is possible: this will prevent any gas from coming out of the tank. Parking in areas of less or no sunlight helps prevent the gas from steaming that would occur if you parked in the hot sun. Your car will stay cooler, too, and that means less gas consuming work for the air conditioner once the engine is started. Stay away from wide-track tires if you want top mileage (耗油1升行驶的英里里程). Narrow-track tires produce less friction and thus rolling resistance. The same ef A. won’t noticeably affect your car’s sliding quality B. can increase tire life C. will increase rolling resistance D. help attain top gas mileage [判断题]水泵一般不允许在出水阀关闭情况下运转。
A.正确 B.错误 [单选题]1619.氨基酸彻底分解的产物是
A.A.胺、二氧化碳 B.B.二氧化碳、水、尿素 C.C.氨、二氧化碳 D.D.二氧化碳、水 E.E.氨 [简答题]离婚与别居制有哪些区别?
[判断题]根据接收到的回波情况来判断缺陷、材料的方法称为脉冲反射法。( )
A.正确 B.错误 [判断题]操课前,根据课目内容做好准备。听到操课信号后,迅速集合整队,清查人数,检查着装和装备器材,带到课堂(训练场、作业场)。( )
A.正确 B.错误 [单选题]单程运行时间12h以上列车的人库清扫工时为( )。
A.240min B.300min C.360min D.420min [多项选择]逆变弧焊电源主要由( )组成。
A. 供电系统 B. 电子功率系统 C. 给定反馈 D. 电子控制系统 E. 电源开关 F. 地线 [判断题]《铁路旅客运输服务质量规范》规定,站台、天桥及进出站地道照明照度不低于100勒克斯。
A.正确 B.错误 [判断题]支柱根部或基础周围5m范围内不得取土,1m范围内应保持清洁,不得有积水和杂物。(1分)
A.正确 B.错误 [多项选择]根据《风景名胜区条例》的规定,我国风景名胜区划分为()。
A. 市、县级风景名胜区 B. 省级风景名胜区 C. 国家级风景名胜区 D. 国家重点风景名胜区 [简答题]《公安机关人民警察内务条令》规定,公安机关警用车辆乘载,应当遵守哪些安全规定?
[单项选择]治疗急性胰腺炎的药物是
A. 柳氮磺胺吡啶 B. 肾上腺皮质激素 C. 奥美拉唑 D. 丙谷胺 E. 抑肽酶 [判断题]在新发展理念中,共享发展注重的是解决社会公平正义问题。
A.正确 B.错误 [判断题]备用电源无电压时,备用电源自投装置不动作。( )
A.正确 B.错误 [填空题]对电焊机的操作场地要求:进料侧的长度应______的最大长度布置,出料侧的长度应______的最大长度确定。
[判断题]同一连接接头中不得采用普通螺栓与焊接共用的连接。
A.正确 B.错误 [单项选择]
火灾的调查工作,是由()组成。 A. (1)、(3) B. (1)、(3)、(4) C. (1)、(2)、(3)、(4) [单项选择]以下哪一种局域网传输媒介是最可靠的?()
A. 同轴电缆 B. 光纤 C. 双绞线(屏蔽) D. 双绞线(非屏蔽) [单项选择]跨度超过()m的装卸桥应装有偏斜调整和显示装置。
A. 40 B. 38 C. 35 D. 30 [单选题]在火灾或日常生活中,如被烧、烫伤最有效的急救方法是( )。
A.用冷水浸泡或冰块冷敷等紧急散热措施 B.立即包扎 C.就近送医 D.呼救 [多项选择]An automotive supplier maintains CAD workstations in widely separated plant locations, and these locations are interconnected by single 1.5Mb/second communication lines. A consultant has been asked to provide a solution that will allow back-ups to be centralized in one location and improve data recovery times. Which TWO questions should the consultant ask first to determine the best solution?()
A. In what format are the CAD documents? B. How much data needs to be backed up from each remote site? C. What are the current acceptable windows for back up and restore? D. Are the plants within line-of-sight to enable wireless communication? E. Can the communication lines cost-effectively be upgraded to a higher level of service? [单选题]被尊为唐宋八大家之首的是( )。
A.韩信 B.韩愈 C.李白 D.杜甫 [简答题]某企业在进行项目投资决策时,有甲、乙、丙三项投资方案可供选择,其初始投资额为:甲方案20000,乙方案9000,丙方案12000。各方案在其寿命周期内的净利润和现金净流量如下表所示,设贴现率为10%。
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