如图,在中,,垂足为E,垂足为D,cm,cm,求的长.
纸币发行量与流通中所需要的金属货币量不符,就会引起通货膨胀。
We need a more capable leader, _____with a strong will and as well as a good sense of humor. A. who B. that C. one D. which
(08年咸阳市二模) 如果直线与圆相交于两点,且点关于直线对称,则不等式组所表示的平面区域的面积为________.
图9中四地气压值大小的排序正确的是( ) A.甲>乙>丙>丁 B.乙>甲>丙>丁 C.乙>丁>甲>丙 D.乙>甲>
Treasure-seeking in Titanic REASURES of Titanic as well as the captain's logbook(航海日志) may reappear to the public. RMS Titanic Company declared recently that it was ready to search the int
下列关于离子共存的说法正确的是( ) A.某无色溶液中可能大量存在H+、Cl﹣、MnO4﹣ B.pH=2的溶液中可能大量存在Na+、NH4+、SiO32﹣ C.含AlO2﹣的溶液
15“雍正年间用兵西北·······始设军机房于隆宗门内,选内阁中书之谨密者人直缮写。”这说明军机处设置的最初目的是