患者,女,26岁。产后20天,发热,头痛,汗出恶风,舌苔薄白,脉浮缓。首选药组是()。
A.麻黄、桂枝
B.桂枝、白芍
C.紫苏、生姜
D.黄芪、防风
E.苍术、羌活
参考答案:B
It’s important ____ the piano well.
A.of him to play
B.for him to play
C.of him playing
D.for him playing
斜刃口冲裁时,落料的凸模应为平刃口,而凹模开成斜刃口。