A.15‰;8‰ B.12‰;6‰ C.10‰;5‰ D.8‰;4‰
A.夏季為5~10mm,冬季為10~15mm B.夏季為10~15mm,冬季為15~20mm C.夏季為5~10mm,冬季為15~20mm
A.30° B.45° C.60° D.90°