教学法的特点包括（）。
A.发展性
B.稳定性
C.多样性
D.可补偿性
E.综合性
参考答案：A, C, D, E
润湿剂
A．HLB值为15～18 B．HLB值为8～16 C．HLB值为3～8 D．静脉用乳化剂 E．HLB值为7～9
----- Why are they taking all the equipment away ?
------____________ , they are packing up to leave.
A．The job was done
B．The job has been done
C．With the job done
D．With the job doing
