钩体病的传播途径是（） ["以下都是","接触传播","消化道传播","哺乳感染","呼吸道传播"]
机体感染病原体后的表现主要取决于（） ["机体的免疫能力","外界环境","病原体的致病力","治疗方法","机体对药物的敏感性"]
超强刺激的强度应是比产生最大肌收缩效应的刺激强度还要增强（） ["5%～9%","10%～15%","16%～29%","20%～25%","26%～30%"]
预破碎的煤粒度标准是（）。 ["<10mm","<15mm","<20mm","<25mm"]
睫状肌收缩会引起（） ["瞳孔缩小","瞳孔散大","晶状体悬韧带松弛、晶状体凸度增大","晶状体悬韧带紧张、晶状体凸度减小","辐辏"]
什么叫“复打桩”？
