开关电源的内部损耗大致可包括();
A、开关损耗
B、热损耗
C、附加损耗
D、电阻损耗
E、导通损耗
参考答案:A, C, D, E
After months of overworking, she was suffering from __________and physical exhaustion. [ ]
A. mental
B. medical
C. fatal
D. psychological
SATA1.0标准的硬盘数据传输速率可达()。
A、133MB/s
B、300MB/s
C、150MB/s
D、600MB/s