（）是指为完成工程项目施工，发生于该工程施工前和施工过程中非工程实体项目的费用。 A

对癫痫有重要诊断价值的辅助检查是（）

A.脑脊液（CSF.

B.计算机体层扫描（CT）

C.磁共振（MRI）

D.脑电图（EEG）

E.脑彩超（TCD.

如图（俯视图）所示的电路中，电源内阻可不计，电阻R₁=R₂=R₀。平行光滑导轨PQ、MN之间的距离为L，水平放置，接在R₂两端。金属棒ab的电阻R₃=，垂直于PQ、MN，所在区域有竖直向下的磁感应强度为B的匀强磁场。竖直放置的两平行金属板A、B之间的距离是d，分别与Q、N连接。闭合开关S，ab在大小为F的水平外力作用下恰好处于静止状态，待电路稳定后，一质量为m、电荷量为q的正粒子从A、B的左端某位置以初速度v₀水平射入板间，从右端飞出时速度大小是2v₀。不计粒子重力。（R₁、R₂、R₃不是已知物理量，R₀是已知物理量）求：

（1）电源的输出功率P是多大？

（2）粒子在A、B之间运动的过程中，沿垂直于板方向通过的距离y是多大？

患者，女性，43岁，突感剧烈头痛、恶心、呕吐、眩晕1小时打120电话呼救。既往健康，1周前曾出现类似头痛、呕吐及复视，程度较轻，自服头痛粉后缓解。现场检查结果：T、P、R、Bp正常；神志模糊，烦躁，瞳孔等圆等大，对光反射灵敏；心、肺、腹部检查无异常发现；无神经系统定位体征，脑膜刺激征阳性。

考虑的诊断（）

A.脑出血

B.上呼吸道感染

C.蛛网膜下腔出血

D.流行性脑脊髓膜炎

E.内耳眩晕症

Personal computers are used by one person at a time. The largest personal computer, or PCS, can fit on a (1) . Some of these (2) have more than one microprocessor. (3) the primary processor, which is a general-purpose device, a PC may have one or more processors to (4) special kinds of work. Some machines, (5) , have maths processors, others have graphics processors to help process photographs and other illustrations. Still others have (6) processors.
Office workers also use PCS that are not (7) to a network. These machines are used for (8) tasks as word processing, performing financial calculations, and organizing and (9) bodies of information called databases. People use PCS at (10) for some of the same kinds of tasks. They use word processing programs for (11) Communication, financial software for household budgets. Individuals also use their home computers to play (12) and to communicate (13) the internet.
Small, portable PCS are (14) with people who often work away from their desks. The (15) include laptop computers, which can be (16) on the lap; notebook computers, which are about the (17) of a loose leaf notebook; and palmtop, or handheld computers, which can be operated while (18) in the hand. Laptop and notebook computers have the same (19) as desktop computers. Palmtop computers have less power but still (20) some advanced capabilities. For example, they can process household financial data.

二、完形填空

A．processor

B．power

C．usage

D．palm

电子束焊时，电子束焊机应安装专用的接地地线，其接地电阻应该小于3Ω。( )