問題詳情
11.福建某中学研究性学习小组，设计了可调节窗户遮陽板，实现教师良好的遮陽与采光。图5示意遮陽板设计原理。据此回答11-12题。
遮陽板收起，室内正午太陽光照面积达一年最大值时
(A)全球昼夜平分
(B)北半球为夏季
(C)太陽直射20°S
(D)南极圈以南区极昼
遮陽板收起，室内正午太陽光照面积达一年最大值时 (A)全球昼夜平分
(B)北半球为夏季
(C)太陽直射20°S
(D)南极圈以南区极昼
參考答案
答案：D
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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