针对我国水资源的时空分布不均衡的特点,应采取的是最有效措施是()。
A. 节约用水,防止水污染
B. 修建水库,跨流域调水
C. 植树造林,治理沙漠
D. 人工降雨,改造局部地区气候
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当各测点间的碳化深度值相差大于3.0mm时,应在每一回弹测区测量碳化深度值。()
A. 正确
B. 错误
阅读《寡人之于国也》的段落,回答问题。 五亩之宅,树之以桑,五十者可以衣帛矣;鸡豚狗彘之畜,无失其时,七十者可以食肉矣;百亩之田,无夺其时,数口之家,可以无饥矣;谨庠序之教,申之以孝悌之义,颁白者不负戴于道路矣。七十者衣帛食肉,黎民不饥不寒,然而不王者,未之有也。这段话主要论述了什么问题?
The following query will provide what information about transportable tablespaces for the current database?() select d.platform_name "Source", t.platform_name "Compatible Targets", endian_format from v$transportable_platform t, v$database d where t.endian_format = (select endian_format from v$transportable_platform t, v$database d where d.platform_name = platform_name);
A. The list of target platforms having the same endian format as the source database
B. The list of target platforms requiring endian conversion
C. The list of target platforms that will not require endian conversion
D. The list of all target platforms that can receive transportable tablespaces from the source database
E. None of the above
运行中的制冷装置,可造成膨胀阀处于全开状态的原因是()。
A. 感温包漏泄或破裂
B. 毛细管漏泄或破裂
C. 感温包与蒸发器出口管脱开
D. 菜库的温包错装肉库