反射活动的一般特性不包含
A．单向传递
B．对等原则
C．兴奋节律的改变
D．后发放
E．反射的习惯化与敏感化
参考答案：B
This cake is very sweet. You _____ a lot of sugar in it. [ ]
A. should put
B. could have put
C. might put
D. must have put
颗粒过于疏松时可采用的解决措施为（）
A.过筛整粒
B.加辅料进行调整
C.加浸膏粉进行调整
D.加高浓度乙醇制粒
E.加淀粉浆制粒
