單項(xiàng)選擇題
A.99% B.94.5% C.99.9%
A.20%~50% B.25%~35% C.35%~50%
A.高強(qiáng)接頭 B.較易接頭 C.密封膨脹接頭
A.10.8 B.108 C.33.3
A.1.5 B.150 C.150%
A.0.050 B.0.060 C.0.080
A.27 B.54 C.84
A.100 B.90 C.95
A.1 B.3 C.2