题目内容

灯具上所有进线口处须加(),并用()粘牢。

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课堂教学要想取得预期的效果,就必须以恰当的()。

A. 课堂常规为基础
B. 课堂管理为基础
C. 课堂学习为基础

脱氢氰酸塔的作用是出去丙烯腈中所含的氢氰酸及水分。

A. 正确
B. 错误

A fire is discovered in the forepeak of a vessel at sea. The wind is from ahead at 35 knots. You should().

A. remain on course and hold speed
B. change course and put the stern to the wind
C. change course to put the wind on either beam and increase speed
D. remain on course but slack the speed

请简要叙述车辆电路系统一级保养工艺中蓄电池作业项目检查工序的作业步骤、工艺要求。

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