决定CT图像空间分辨力的主要因素是（）. A.扫描方式 B.有效视野 C.重建矩阵

某重置全新的一台机器设备价格为200万元，年产量为50万件。现知被评估资产的年产量为40万件，由此可以确定其重置成本为（）万元。

A．100

B．120

C．160

D．200

下列各种编码中，每个字节最高位均为“1”的是

A．汉字国标码

B．汉字机内码

C．外码

D．ASCⅡ码

补全对话，每空一词。

Miss Wang:   1   me. Are you Mr. Smith from   2  , please?

Mr. Smith: Yes, I'm   3   New York.

Miss Wang: How do you do? My   4   is Wang Yang from the Great Wall Company.

Mr. Smith: How do you do, Miss Wang? 

Miss Wang:   5   to China, Mr. Smith. Our manager asks me to come and   6   you.

Mr. Smith: Thank you, Miss Wang. I'm very   7   to meet you.

Miss Wang: Glad to meet you,too. Now let's    8   to the hotel.

1. _____2. _____3. _____4. _____

5. _____6. _____7. _____8. _____

在做“探究加速度与质量的关系”的实验中，

（1）某同学在接通电源进行实验之前，将实验器材组装如图1所示，该装置中的错误或不妥之处，请你指出其中的两处：

①______；

②______．

（2）若测得某一物体受力F一定时，a与m的关系数据如下表所示：

a/m．s-2	2.04	2.66	3.23	3.98
m/kg	2.00	1.50	1.25	1.00
1 m /kg-1	0.50	0.67	0.80	1.00

根据表中所列数据，分别在图2中所给坐标纸上画出a-m图象和a-

1

m

图象；

（3）对比分析a-m图象和a-

1

m

图象可知，当F一定时，a与m成______比．

（4）由a-

1

m

图象可知，F=______N（结果保留一位有效数字）．

The kernel is the (66) of an operating system such as Windows98, Windows NT, Mac OS or Unix. The kernel provides basic services for the other parts of the operating system, (67) it possible for it to run several programs at once (multitasking), read and write files and connect to networks and peripherals. Applications and utility programs use the services provided by the kernel to provide practical business functionality.

In operating systems such as Windows or most versions of Unix, the kernel (68) everything except application and utility programs.

In microkernel operating systems such as Digital Unix and Apples forthcoming Mac OS Server, the kernel (69) supports only multitasking and memory management. Other services such as applications, utilities and the user interface support device drivers, API and graphics which all (70) outside the microkernel.

（68）处填（）。

A．include

B．includes

C．exclude

D．including