ZYJ7电液转辙机单向阀是采用（）。
参考答案：双层阀门
25. I don’t like the way _________ he speaks to his mother.
A．which
B．in which
C．of
D．to
杏苏散的功效是( )
A．轻宣凉燥，宣肺化痰 B．轻宣润燥，止咳化痰 C．轻宣凉燥，宣肺解表D．轻宣润燥，散寒发表 E．轻宣温燥，清气化痰
