压焊过程中，除对焊件施加一定压力外，还必须对焊件进行加热才能完成焊接。( )
参考答案：错
We had estimated the number of visitors to our school’s hundredth anniversary at about 400, but the __________ number was much higher.
A．actual
B．genuine
C．sincere
D．unbelievable
片剂制备方法不包括（）
A.湿法制粒压片
B.干法制粒压片
C.直接粉末压片
D.半干式颗粒压片
E.结晶直压片
