专业自保公司的所有权属于（）。 A.保险方 B.被保险方 C.投保方 D.再保险方

如图甲所示，水平传送带顺时针方向匀速运动。从传送带左端P先后由静止轻轻放上三个物体A、B、C，物体A经t_A＝9.5s到达传送带另一端Q，物体B经t_B＝10s到达传送带另一端Q，若释放物体时刻作为t＝0时刻，分别作出三物体的速度图象如图乙、丙、丁所示，求：

（1）传送带的速度v₀＝？

（2）传送带的长度l＝？

（3）物体A、B、C与传送带间的摩擦因数各是多大？

（4）物体C从传送带左端P到右端Q所用的时间t_c＝？

未采取节能措施的住宅采暖热指标推荐值为58～64W/m²，在( )情况时取上限值。

A．总建筑面积较大

B．围护结构传热系数较大

C．窗户面积较小

D．围护结构热惰性指标较大

在结账前发现账簿记录有文字或数字错误，而记账凭证没有错误，采用红字更正法。（）

While most recent attention in the AI field has been focused on expert system software, AI (66) has also seen dramatic advances. Activity in the past years was characterized by new low-cost, powerful Lisp machines, the introduction of AI workstations, Lisp compilers becoming available for all major professional and engineering workstations, and the personal computer emerging as a (67) . tool for expert system development. The next few years will see this technology evolves further.
Because the (68) of an AI computer represents a sizable investment, companies should carefully (69) all options that are available as well as have a good idea of what the next generation of systems will offer in order to (70) the optimum system. This publication provides the information necessary to gain this understanding.

A．choice

B．read

C．important

D．software

E．hardware

F．significant

G．emergence

H．survey

I．purchase

J．select