| Freshwater life itself has never come
easy in the Middle East. Ever since The Old Testament (旧约全书), God punished man
with 40 days and 40 nights of rain. Water supplies here have been dwindling. The
rainfall only comes in winter and drains quickly through the semiarid land,
leaving the soil to bake and to thirst for next November. The region’s accelerating population, expanding agriculture, industrialization, and higher living standards demand more freshwater. Drought and pollution limit its availability. War and mismanagement waste it. Said Joyce Start of the Global Water Summit Initiative, based in Washington, D.C. "Nations like Israel and Jordan are swiftly sliding into that zone where they are suing all the water resources available to them. They have only 15 to 20 years left before their agriculture, and ultimately A. develop other enterprises that cost less water B. draw a plan of irrigation for the various nations C. import water from water-rich nations D. stop wars of any sort for good end all [单选题]含有2个手性碳原子的肾上腺素药物是
A.盐酸多巴胺 B.盐酸克仑特罗 C.沙丁胺醇 D.盐酸氯丙那林 E.盐酸麻黄碱 [填空题]行车备品包含：手摇把、转辙机箱钥匙、钩锁器（扳手）、铜锁、 、信号灯、手电筒、手套等。
[单选题]请判断下述情况为（）缺陷：电缆瓷质终端瓷套损伤,瓷套管有细微破损，表面硬伤200mm2以下。
A.一般 B.严重 C.危及 [单选题]肝性脑病患者前驱期的突出和主要表现为
A. 精神异常 B. 定向力减退 C. 性格和行为异常 D. 时空概念紊乱 E. 扑翼样震颤 [单选题]移频自动闭塞发送盒的输出功率，依据机车信号的接收灵敏度以及在轨道电路最不利的调整状态和分路状态下，应能准确地发送信息，并能稳定地动作机车信号设备，确定为( )。
A.9.5W B.10W C.13W D.13.5W [单项选择]以下营养素中（）不提供热能。
A. 矿物质 B. 蛋白质 C. 脂肪 D. 糖 [简答题]试述游戏在幼儿心理发展中的作用。
[单选题]《铁路旅客运输管理规则》第83条规定，直接接触食品的工作人员要( )进行健康检查，取得"健康证"并持证上岗。
A.定期 B.不定期 C.随时 D.每季度 我来回答: 提交
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