It is rainy.
The doctor has devoted most of his time to the patients.
一辆汽车沿平直公路从甲站开往乙站,启动加速度为2m/s2,加速行驶5秒后匀速行驶2分钟,然后刹车,滑行50m,正好到达乙站,求:
深色物体反光能力与吸热能力分别为( )。