质地较松散而呈丝条状或片状的药物须( )
A.碾捣B.揉搓C.拌衣D.煅制E.制绒
参考答案:B
The roof of our house is broken, so it needs()
A.repaired
B.repairing
C.being repaired
D.to repair
电路中存在过渡过程。