| {{B}}
Highways in the
US{{/B}} The United States is well-known for its network of major highways designed to help a driver get from one place to another in the shortest possible time.{{U}} (51) {{/U}}these wide modern roads are generally smooth and well maintained, with{{U}} (52) {{/U}}sharp curves and many straight sections, a direct route is not always the most{{U}} (53) {{/U}}one. Large highways often pass{{U}} (54) {{/U}} scenic areas and interesting small towns. Furthermore, these highways generally{{U}} (55) {{/U}}large urban centers which means that they become crowded with{{U}} (56) {{/U}}traffic during rush hours, when the "fast, direct" way becomes a very slow route. However, there is{{U}} (57) {{/U}}always another route to take if A. lead B. connect C. collect D. communicate [判断题]支座座板翘起或缺少时应予更换或补充，焊缝开裂应予整修。
A.正确 B.错误 [判断题]接发列车的五项内容，除办理闭塞外，其他各项可指派客运员、扳道员或清扫员办理。( )（应知应会-《技规》第350条）
A.正确 B.错误 [单选题]有关功血住院病人的一般护理措施，不正确的是
A.指导病人按医嘱正确用药 B.鼓励病人摄取营养丰富、含铁量高的食物 C.通过盆浴、淋浴等方式保持外阴清洁 D.指导病人卧床休息，减少盆腔充血 E.严密观察与感染有关的征象 [判断题] 政府专职消防员在非个人支配的时间(每日操课、学习、会议、集体活动、就寝期间及履行岗哨职责、灭火救援现场、执行各类任务等时),应将移动电话和互联网终端设备上交并集中保管。因工作和其他紧急情况确需使用的,需经消防救援站负责人批准,使用完毕后不用上交。 ( )
A.正确 B.错误 [单项选择]卡氏肺囊虫肺炎首选下列哪种药物治疗（）
A. 复方新诺明 B. 青霉素 C. 链霉素 D. 红霉素 [多选题]对于破拆机具连续工作性能有何要求？
A.燃油型破拆机具的一次额定燃油充装量，应能保证连续正常工作时间不小于20分钟 B.破拆机具的连续正常工作时间（除加油时间外）应不小于3小时 C.破拆机具的连续正常工作时间（除加油时间外）应不小于4小时 D.其机体及手柄表面的温度应不大于70摄氏度 E.其机体及手柄表面的温度应不大于80摄氏度 [判断题]油层中存在高渗透率层时，注入蒸汽将优先进入高渗层而导致层间吸汽不均。
A.正确 B.错误 [填空题]由于能量在传递过程中的______，食物链长度一般只有四、五级。
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