问题
单项选择题
People living in big modem cities are scarcely aware of the fact that there are still many people who are living in poor and filthy environments.
A. poverty-stricken
B. sloppy
C. sordid
D. solid
答案
参考答案：C
解析：sordid有“肮脏、破烂”等意。
的空气柱。已知大气压强为l0汞柱髙。如果使玻璃管绕B点在竖直平面内顺时针缓慢地转动至BC管水平，求此时AB管内气体的压强为多少汞柱高？管内封入的气体可视为理想气体且温度不变。