实验结束后，通常采用（）清洗揉面钵中和螺旋搅拌叶片上粘附的面团。 ["温水，细纱布","稀盐酸，细毛刷","稀碱液，细毛刷","温水，钢丝球"]
室内型家用燃气快速热水器按排气方式分为（）几类。 ["自然给排气式","强制排气式","强制给排气式","自然排气式","直排式"]
屋面保温层的厚度应进行现场抽样检验，其厚度偏差应不大于（）mm。 ["2","5","8","10"]
正常儿童寰齿间距一般应小于（） ["1mm","2mm","3mm","4mm","5mm"]
我国粮油卫生标准中规定的磷化物允许量为（）。 ["不得检出","0.05mg\/kg","0.5mg\/kg","5.0mg\/kg"]
主观能动性
