某有机物X在酸性条件下能发生水解反应,水解产物为Y和Z.同温同压下,相同质量的Y和Z的蒸气所占体积相同,X可能是( )
A:乙酸丙酯
B:甲酸乙酯
C:乙酸甲酯
D:乙酸乙酯
which river do you think is the d____ ?
匀加速直线运动中,加速度为3 m/s2,则( )
The man rushed into the house and saved those children's ____ (life).