A.8S B.12S C.16S D.20S
A.單模,1310 B.多模,1310 C.單模,850 D.多模,850
A.0,并參與邏輯運算 B.0,并不參與邏輯運算 C.實際值,并參與邏輯運算 D.實際值,并不參與邏輯運算