單項(xiàng)選擇題
A.5 B.7 C.10
A.20% B.10% C.7% D.3%
A.較大 B.中等 C.較小
A.30% B.40% C.60% D.85%
A.相對運(yùn)動(dòng) B.相互不接觸 C.自由懸掛的單一零部件
A.壓板B.焊接C.步步緊
A.燃點(diǎn) B.凝點(diǎn) C.閃電
A.0.4-0.8 B.1.2-1.8 C.1.8-2.4
A.10 B.20 C.40
A.10 B.20 C.40 D.50
A.5 B.10 C.15 D.20