对游隙不可调整的滚动轴承以其（）为装配依据。
A、原始径向游隙
B、安装游隙
C、工作游隙
D、轴向游隙
参考答案：A
（）, the brains of a computer, it contains the ALU, the clock, many registers, the bus interface, and circuitry that makes these pans work together.
A. I/O device
B. CPU
C. Memory
D. Operating system
集水器
