(2012)关于电场和磁场,下述说法中正确的是:() ["静止的电荷周围有电场,运动的电荷周围有磁场","静止的电荷周围有磁场,运动的电荷周围有电场","静止的电荷和运动的电荷周围都只有电场","静止的电荷和运动的电荷周围都只有磁场"]
蓼大青叶药材的主要化学成分是() ["A.蒽醌类","B.挥发油类","C.黄酮类","D.靛蓝和靛玉红","E.皂苷类"]
下列对非甾体抗炎药吲哚美辛叙述错误的是() ["易溶于水","过酸过碱均可发生水解反应","本品可与新鲜的香草醛盐酸液共热,呈现玫瑰紫色","对胃肠道刺激性大","对炎症性疼痛作用显著,对痛风性关节炎疗效较好"]
枕左前位胎头进入骨盆时,衔接的径线是() ["双顶径","双颞径","枕下前囟径","枕额径","枕颏径"]
阿司匹林(乙酰水杨酸)最常见的不良反应是() ["过敏反应","凝血障碍","瑞氏(ReyE.综合征","水杨酸反应","胃肠道反应"]
验电、装设接地线应有明确位置,装设接地线或合接地刀闸的位置必须与()相符。