根据文章，对“太阳能发电卫星”下定义最为准确的一项是：
A. 太阳能发电卫星是搭载太阳电池壁板在宇宙空间进行发电的卫星。
B. 太阳能发电卫星是与地球轨道保持同步并在宇宙空间进行发电的卫星。
C. 太阳能发电卫星是搭载太阳电池壁板并将电力变换成微波束送回地面使用的卫星。
D. 太阳能发电卫星是由在宇宙空间进行发电的卫星与在地面上接收电波的受电设施组成。
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运算器由许多部件组成，其核心部分是()。
A. 数据总线
B. 算术逻辑单元
C. 累加寄存器
D. 多路开关
不适用计划评审技术管理的项目有()。
A. 软件开发
B. 新设备研制
C. 建楼房
D. 科技攻关
A．His inborn talent.B．A lot of his achievements outside school.C．His hard work only.D．
A. His inborn talent.
B. A lot of his achievements outside school.
C. His hard work only.
D. The most important lessons from his mother.
What did the students find out about McKay？
A. He trained pilots for some time．
B. He lived longer than other pilots．
C. He died in World War Two．
D. He was downed by the pilot Boelcke．
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