A. 缩小昼夜温差,延长光照时间 B. 缩小昼夜温差,缩短光照时间 C. 增大昼夜温差,延长光照时间 D. 增大昼夜温差,缩短光照时间
A. 正确 B. 错误
A. 远见投资 B. 缩小投资 C. 规模投资 D. 短视投资
A. oil from flowing out of the tank vent B. air from entering the tank vent C. vapors from leaving the tank vent D. flames on deck from entering the tank vent