[简答题]补出立体的第三投影图
求水平投影图
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[简答题]补出立体的第三投影图
求正面投影图
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[简答题]补出立体的第三投影图
求侧面投影图
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[单项选择]我国“三步走”的经济社会发展战略的第三步，是到21世纪中叶，人均国民生产总值达到( )水平。
A. 发达国家
B. 中等发达国家
C. 发展中国家高等
D. 发展中国家平均

[名词解释]立体种植

[单项选择]在第三版巴塞尔协议中，新引入的用来反映商业银行长期流动性水平的指标是（）。
A. 流动性覆盖比率
B. 流动性缺口率
C. 核心负债比例
D. 净稳定融资比率

[单项选择]某水平角度需观测四个测回，则测第三测回时，起始方向的读数应配置在（）。
A. 0°左右 
B. 45°左右 
C. 60°左右 
D. 90°左右

[单项选择]根据《柴油车排放污染防治技术政策》，为达到相当于欧洲第三阶段排放控制水平的要求，新生产柴油车及车用柴油机可采用( )的综合治理技术路线。
A. 新型燃油泵、高压燃油喷射、废气再循环(EGR)、增压、中冷等技术相结合
B. 电控燃油高压喷射(如电控单体泵、电控高压共轨、电控泵喷嘴等)、增压中冷、废气再循环(EGR)及安装氧化型催化转化器等技术相结合
C. 更高压力的电控燃油喷射、可变几何的增压中冷、冷却式废气再循环(EGR)、多气阀技术、可变进气涡流等，并配套相应的排气后处理技术
D. 更高压力的电控燃油喷射、可变几何的增压中冷、冷却式废气再循环(EGR)、多气阀技术、可变进气涡流

[名词解释]第三产程

[简答题]第三党

[单项选择]第三步

[简答题]第三间隙

[单项选择]第三篇 　　 Water 　　The second most important constituent (构成成份) of the biosphere (生物圈) is liquid water. This can only exist in a very narrow range of temperatures, since water freezes at 0℃ and boils at 100℃. Life as we know it would only be possible on the surface of a planet which had temperatures somewhere within this narrow range. 　　The earth’s supply of water probably remains fairly constant in quantity. The total quantity of water is not known very accurately, but it is about enough to cover the surface of the globe to a depth of about two and three-quarter kilometers. Most of it is in the form of the salt water of the oceans about 97 percent. The rest is fresh, but three quarters of this is in the form of ice at the Poles and on mountains, and cannot be used by living systems until melted. Of the remaining fractional which is somewhat less than one per cent of the whole, there is 10—20 times as much stored underground water as t
A. over the mountains than over the rivers
B. over the rivers than over the mountains.
C. over the oceans than over the land.
D. over the land than over the oceans.