单选题夜间观测若无法辨明云状时()A则估计天空被遮蔽看不到星光的部分为总云量B低云量栏记–C云状栏记–DD.B.C都对
单选题
夜间观测若无法辨明云状时()
A
则估计天空被遮蔽看不到星光的部分为总云量
B
低云量栏记–
C
云状栏记–
D
D.B.C都对
参考解析
解析:
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