| The world is not only hungry; it is
also thirsty for water. This may seem strange to you because nearly 75% of the
earth’s surface is covered with water. But about 97% of this huge amount is
seawater or salt water. Man can only drink and use the other 3%—the freshwater
that comes from rivers, lakes, underground, and other sources. And we cannot use
all of that, because some of it is in the form of iceberg and glaciers (冰河).
Even worse, some of it has been polluted. However, as things stand today, this small amount of fresh water, which is constantly being replaced by rainfall, is still enough for us. But our need for water is increasing rapidly almost day by day. Only if we take steps to deal with this problem now can we avoid a severe worldwide water shortage later on. A limited water supply would have a bad effect on agriculture and industr A. the small amount of fresh water is constantly being replaced by rainfall B. some of the water has been polluted C. our need for fresh water is increasing rapidly D. huge amount of the water on earth is seawater [单选题]作出《关于为刘少奇同志平反的决定》的会议是( )。
A.中共十一届三中全会 B.中共十一届四中全会 C.中共十一届五中全会 D.中共十一届六中全会 [单项选择]“和魂洋才”设计风格意指（）。
A. 中庸之道 B. 日本手法加欧美思想 C. 日本思想加欧美手法 D. 中西结合 [填空题]轨道精调应遵守“ ， ”，“先轨向，后轨距”的原则。
[单选题]下列物质属于多糖类保湿剂( )。
A.甲壳质 B.丝蛋白 C.弹性蛋白 D.甘油 [判断题]从事特种设备作业的人员称为特殊工种人员。
[单项选择]阀门型号Z941H—16C中第五个字符是（）
A. 阀体材料代号 B. 连接形式代号 C. 阀门密封面或衬里材料 D. 结构形式代号 [填空题]兄弟姐妹之间，是（）的法定继承人。
[简答题]快切装置压板未投哪些压板？
[单选题]用万用表检测二极管时，应使用万用表的( )。
A.电流档 B.电压档 C.1kΩ档 D.10Ω档 我来回答: 提交
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