Jim, This is my mother. Mum, _ is Jim. [ ]
A. it is
B. that is
C. he is
D. this is
答案:D
气滞、血瘀、精伤、血少的病变,多见于哪种脉象
A.弦脉B.滑脉C.涩脉D.虚脉E.结脉
下列属于传统MP型锻压机特点的是()。
A、有前后两个平衡缸
B、滑块导轨截面为X形
C、封高调节为下调式
D、双凸轮上顶料