0.2×0.9+0.4=0.58(公斤/厘米2)
A.25~30N/m2 B.25~50N/m2 C.50~100N/m2 D.100~110N/m2
A.立即將有關(guān)設(shè)備的電源切斷,然后進(jìn)行救火 B.直接救火 C.立即離開
A.0.7 B.1 C.1.5
A.鐵耗 B.銅耗 C.既能測鐵耗又能測銅耗