天然气在储集层内部运移时，以水动力和（）为主。
参考答案：浮力
Seed plants - plants _____ from seeds - need water, sunlight and mineral to grow vigorously. [ ]
A. grown
B. to grow
C. to be grown
D. having grown
单丛乌龙茶内质审评分三次泡，时间分别为几分钟？
