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【单选题】
（单选）冬天，在室外，摸着铁感觉比摸着树木凉，主要原因是（）A.
铁的温度比树的温度低
B.
铁的热导率比树木的大
C.
铁的表面比树木光滑
D.
铁的比热容比树木小
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【单选题】按照《建造师执业资格制度暂行规定》，二级建造师可以担任哪项工作？
A.
二级及以下资质的建筑企业承包范围的建设工程施工的项目经理
B.
二级及以上资质的建筑企业承包范围的建设工程施工的项目经理
C.
建设工程项目的项目经理
D.
建设项目经理施工的项目经理
【单选题】Ever since Uranus was discovered in 1781, astronomers have thought there might be more planets to be discovered in the Solar System. Because of small deviations in the orbits of Uranus and Neptune - d...
A.
From the fact that the old data is inaccurate, it cannot be inferred that the calculated orbits are wrong.
B.
From the fact that the data about the orbits is old it cannot be inferred that it is inaccurate.
C.
From the fact that deviations occur which would occur if Planet X existed, it cannot be inferred that Planet X exists.
D.
From the fact that the calculated orbits are wrong, it cannot be inferred that Uranus and Neptune will deviate from them.
E.
From the fact that Planet X has not been discovered, it cannot be inferred that the search for it is futile.
【单选题】Ever since Uranus was discovered in 1781, astronomers have thought there might be more planets to be discovered in the Solar System. Because of small deviations in the orbits of Uranus and Neptune - d...
A.
From the fact that the old data is inaccurate, it cannot be inferred that the calculated orbits are wrong.
B.
From the fact that the data about the orbits is old it cannot be inferred that it is inaccurate.
C.
From the fad that deviations occur which would occur if Planet X existed, it cannot be inferred that Planet X exists.
D.
From the fact that the calculated orbits are wrong, it cannot be inferred that Uranus and Neptune will deviate from them.
E.
From the fact that Planet X has not been discovered, it cannot be inferred that the search for it is futile.
【简答题】下列选项中不属于工程概况内容范围的是（ ）。
【单选题】按照《建造师执业资格制度暂行规定》，二级建造师可担任（ ）。
A.
二级及以下资质的建筑企业承包范围的建设工程施工的项目的经理
B.
二级及以上资质的建筑企业承包范围的建设工程施工的项目的经理
C.
建设工程项目的项目经理
D.
建设工程项目施工的项目经理
【简答题】求曲线 在xoy 坐标面上的投影曲线的方程,并指出原曲线是什么曲线?
【简答题】求曲线 在xoy 坐标面上的投影曲线的方程,并指出原曲线是什么曲线?
【单选题】按照《建造师执业资格制度暂行规定》,二级建造师可担任( )。
A.
二级及以下资质的建筑企业承包范围的建设工程施工的项目经理
B.
建设工程项目的项目经理
C.
二级及以上资质的建筑企业承包范围的建设工程施工的项目经理
D.
建设工程项目施工的项目经理
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