通信系统检测包括系统检查测试、()与试运行验收测试。
A.正向测试
B.初验测试
C.反向测试
D.综合测试
参考答案:B
竣工决算是指在竣工验收阶段,当建设项目完工后,由建设单位编制的建设项目从筹建到建设投产或使用的全部实际成本的技术经济文件。()
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.
9.()