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能温中和胃，止血，涩肠止泻的辅料是
A．灶心土
B．河砂
C．麦麸
D．蛤粉
E．滑石粉
有电子商务系统结构决定的电子商务的特点有哪些？
B Egyptian Villages 埃及村落
Most of the inhabitants live in mud-brick homes, their (1) walls insulating against the afternoon heat. Flat roofs, exposed (2) the northern evening breezes, serve as cool sleeping (3) as well as storage areas. Villagers plaster the outer walls (4) often trim them in blue, a color they believe (5) off the evil eye. As a man becomes richer, (6) can add a second story to his house perhaps (7) his married son. Those villagers who have made the (8) to Mecca paint the legend of their trip on (9) outer walls of their homes. Such hajj houses, along (10) the mosques, are the most distinguished buildings in a (11)
Some villagers build ornate pigeon coops close to their (12) , using the birds as food and their droppings to (13) crops. Many houses still have dirt floors and lack (14) or running water; women with jars balanced on their (15) make the trek to the community well, and children donkeys haul the (16) liquid in jerry cans.
All (17) said, government sponsored building programs have also brought newer (18) residences and utilities to some villages, particularly those outside (19) Nile Valley in the Oases and the Red Sea (20) areas.
12.（）
以下是硬皮病的病因病机，哪项是错误的：
A．禀赋不耐，食入禁忌，湿热内生
B．脾肺气虚，卫外不固，风寒湿邪入侵客于肌表，凝结腠理
C．脾肾阳虚，寒湿入络，闭塞经脉，气血凝滞
D．外邪入血，营卫失和，气血失调
E．外邪入脏，脏腑失和，阴阳逆乱
变速器漏油可能是（）所导致。
A.变速器缺油或油质变坏
B.润滑油加注过多
C.变速器中间轴轴向间隙过大
D.同步器磨损或损坏