碱中毒时易发生手足抽搐是因为A.低钙 B.高钠 C.低钾 D.低氯 E.高镁 发布时间:2017-06-22 08:46 │ 来源:www.tikuol.com 题型:单项选择题 问题: 碱中毒时易发生手足抽搐是因为A.低钙B.高钠C.低钾D.低氯E.高镁
题型:单项选择题 如图所示,铜棒ab长0.1m,质量为6×10-2kg,两端用轻铜线悬挂,整个装置处在竖直向下的匀强磁场中,现使铜棒中保持通有恒定电流I=9A,铜棒发生偏转,平衡时轻铜线的偏转角为37°,则匀强磁场的磁感应强度为(g=10m/s2,sin37°=0.6,cos37°=0.8)( )A.0.4TB.815TC.0.5TD.23T 查看答案
题型:单项选择题 The suggestion brought up by Jane was ____ because none of us was in favor of it.A.released B.deserted C.resigned D.abandoned 查看答案