请问药店怎么走?
A. Excuse me, could you please tell me how to get to the pharmacy?
B. Excuse me, I need to find a pharmacy. Can you help me?
C. Excuse me, where is the nearest pharmacy?
D. Excuse me, would you mind telling me where the pharmacy is?
在相同温度下,同一液体,其液面为平面,凹面及凸面时的饱和蒸气压分别为p(平)、p(凹)及p(凸);则三者的关系是:
A. p(平)>p(凹)>p(凸)
B. p(凹)>p(平)>p(凸)
C. p(凸)>p(平)>p(凹)
D. p(凸)>p(凹)>p(平)
水平放置的毛细管内有一段两端呈凸液面的液柱,在右侧液面处稍加热,则:
A. 液柱左移
B. 液柱右移
C. 液柱不移动
D. 以上都有可能
室温时,水的表面张力为0.072 N/m,将直径1.0 mm的亲水玻璃毛细管插入水中,和管外液面相比,管内液面将:
A. 上升0.015m
B. 下降0.015m
C. 上升0.029m
D. 下降0.029m