A.黑白 B.红黄 C.黄绿 D.红绿
A.800mm B.1000mm C.1200mm D.1500mm
A.1MΩ B.5MΩ C.10MΩ D.15MΩ
A.±1.5% B.±2.0% C.±2.5% D.±3.0%
A.5ppm B.10ppm C.15ppm D.20ppm
