【简答题】Non-Experimental Data v.s. Experimental Data, please explain the difference
【单选题】Based on the experimental data, which of the following conclusions is the most reasonable one?
A.
Industrial sulfate affects pH levels to a greater extent than naturally occurring sulfate.
B.
Sufficiently warm water temperatures are needed in order for sulfate to affect the pH levels in lake water.
C.
In lake water, pH levels are sensitive to sulfate concentration levels.
D.
In lake water, sulfate concentration levels have little or no impact on pH levels.
【简答题】简述城市交通与城市布局的关系,简述城市道路系统布置的基本要求。
【单选题】地籍按照特点和任务划分为初始地籍和( )。
【判断题】Experimental data are sometimes called retrospective data.
【判断题】abstract 作为形容词表示“抽象的” 作为名词表示“摘要,梗概”。