單項(xiàng)選擇題
A.安裝 B.移動(dòng) C.拆卸
A.1mm B.1.5mm C.2mm D.2.5mm
A.50% B.60% C.70% D.80%
A.三角帶 B.平型帶 C.齒輪帶
A.接觸密封 B.非接觸密封 C.動(dòng)密封 D.靜密封
A.活扳手 B.呆扳手 C.沖擊扳手
A.2~5mm B.5~15mm C.15~20mm
A.220V B.127V C.36V
A.0.1m B.0.05m C.O.3m
A.1140V; B.660V; C.380V;
A.15000; B.20000; C.25000;