單項(xiàng)選擇題
A.1 B.2 C.3 D.4
A.10 B.20 C.30 D.40
A.2 B.3 C.5 D.10
A.1B.2C.5D.10
A.80%~110% B.80%~120% C.85%~110% D.85%~120%
A.60%~110% B.60%~120% C.65%~110% D.65%~120%
A.1×10-2 B.1×10-4 C.1×10-6 D.1×10-8
A.720 B.730 C.740 D.750