A.26℃ B.30℃ C.34℃ D.35℃
A.20% B.15% C.10% D.5%
A. 8mm B. 4mm C. 2mm D. 6mm
A. +2 B. +4 C. +5 D. +3
A.0.5% B.1.0% C.1.5% D.2.0%
A.1 B.2 C.3 D.4
A.8% B.2% C.10% D.5%
A.隔爆性 B.耐爆性 C.防爆性 D.外壳锈蚀