— Is this his ruler? — No. It's ________

以下说法正确的是                                                                          （   ）

A．由夜半球进入昼半球的界线是昏线

B．“北京时间”就是北京市中心的地方时

C．位于同一条经线上各点的地方时都相同

D．春分日正午太阳高度相同的两地地理纬度数不一定相同

影响需求量的因素包括价格、（）、个人偏好、（）

在政府采购活动中，采购人员及相关人员与供应商的下列关系中，无需回避的是（）

A、参加采购活动前3年内与供应商存在劳动关系或担任供应商的董事、监事的

B、参加采购活动后成为供应商的控股股东或者实际控制人的

C、与供应商的法定代表人或者负责人有夫妻、直系血亲、三代以内旁系血亲或者近姻亲关系的

Human beings can see the spatial relations among objects by processing information conveyed by light. Scientists trying to build computers that can detect spatial relations by the same kind of process have so far designed and built stationary machines. However, these scientists will not achieve their goal until they produce such a machine that can move around in its environment.
Which of the following, if true, would best support the prediction above

A．Human beings are dependent on visual cues from motion in order to detect spatial relations.

B．Human beings can often easily detect the spatial relations among objects, even when those objects are in motion.

C．Detecting spatial relations among objects requires drawing inferences from the information conveyed by light.

D．Although human beings can discern spatial relations through their sense of hearing, vision is usually the most important means of detecting spatial relations.

E．(E) Information about the spatial relations among objects can be obtained by noticing such things as shadows and the relative sizes of objects.

简述制定运动处方的程序。