Which information is found in the chart title().
A rhumb line appears as a straight line
B. Distance is measured at the midlatitude of the track line
C. Meridians appear as curved lines converging toward the nearer pole
D. Parallels,except the equator,appear as curved line
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依据《矿山安全法》的规定,每个矿井必须有两个以上能行人的安全出口,出口之间的()必须符合矿山安全规程和行业技术规范。
A. 直线水平距离
B. 最大距离
C. 垂直距离
D. 最小距离
在研究紊流边界层的阻力特征时,所谓粗糙区是指粘性底层的实际厚度Δ小于粗糙高度。
A. 正确
B. 错误