螺纹标注为”M24×1.5左”表示()。A、螺纹长1.5mm B、螺纹螺距1.5m 发布时间:2017-11-26 00:51 │ 来源:www.tikuol.com 题型:单项选择题 问题: 螺纹标注为”M24×1.5左”表示()。A、螺纹长1.5mm B、螺纹螺距1.5mm C、螺纹直径1.5m D、螺纹螺距1.5mm、长24mm
题型:单项选择题 有两个点电荷所带电荷量的绝对值均为Q,从其中一个电荷上取下的电荷量,并加在另一个电荷上,那么它们之间的相互作用力与原来相比( )A.一定变大B.一定变小C.保持不变D.由于两电荷电性不确定,无法判断 查看答案
题型:单项选择题 She was working in the room suddenly she heard a boy crying and ________ out as quickly as she could to see what was happening. A.going B.go C.had goneD.went 查看答案