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Text{{/B}} In common with many countries, Britain has serious environmental problems. In 1952, more than 4,000 people died in London because of the smog. The government {{U}} (26) {{/U}} new laws to stop smog from coal fires and factories and the {{U}} (27) {{/U}} improved a lot. Today, London is much cleaner {{U}} (28) {{/U}} there is a new problem: smog from cars. In December 1991, there was very {{U}} (29) {{/U}} wind in London and pollution {{U}} (30) {{/U}} a lot, which led to 160 deaths in just four days. {{U}} (31) {{/U}} of the problem is the new" out of town" shopping centers. In the past, people often {{U}} (32) {{/U}} to shops near their homes or went by bus. Today, many people drive to the new shopping centers. {{U}} (33) {{/U}}, the small shops have {{U}} A. transport B. traffic C. service D. supplement [单选题]急性心肌梗死临床上最常见的心电图改变是
A.ST段弓背向上抬高 B.异常高大两支不对称的T波 C.高大的R波 D.ST段压低 E.T波倒置 [多选题]发生溢流的确切预兆是( )。
A.泵压增加 B.扭矩增加 C.返回流速增加 D.池液面升高。 [多选题]涵洞如有满流情况时,（ ）。
A.可采用在入口处抬高管节 B.增砌漏斗形进口的办法 C.必要时应进行改建或扩孔 [单选题]在螺纹连接的防松方法中，开口销与槽型螺母属于（ ）防松。
A.利用摩擦 B.利用机械 C.永久 D.化学 [填空题]任何社会组织都是由_________、_________、__________组成的系统，任何管理都是对系统的管理。
[单选题]接线时地线要比火线长[ ]mm以上。( )
A. 20 B. 40 C. 50 [单选题]能量损失和阻力系数的关系是（ ）。
A.正比 B.反比 C.不成关系 D.不确定 [判断题]电缆隐患排查治理应纳入日常运维工作中，按照“发现（排查）-评估-报告-治理（控制）-验收-销号”的流程形成闭环管理。
A.正确 B.错误 [单选题]单机进入区间担当救援作业，在接近被救援列车（）时，按规定严格控制速度。
A.4km B.3km C.2km D.1km [简答题]183.写出三种主要的网络结构形式并画图示意。
[单选题]空调导致外门集控开门/关门失效时，按压（）关闭空调
A.任意司机室内的空调紧急关按钮 B.主控端司机室内的空调紧急关按钮 C.非主控端司机室内的空调紧急关按钮 D.任意司机室内的空调开按钮 [填空题]{{B}}第三节 短文理解 2{{/B}} 阅读下列短文，从[A]、[B]、[C]三个选项中选择一个正确答案。
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