胸痹的病位在:
A.脾虚B.湿盛C.脾虚湿盛D.肝脾不和E.脾胃失调
参考答案:B
It is not who is right but what is right _____ is of importance.[ ]
A. which
B. it
C. that
D. this
影响压杆的临界力或临界应力大小的因素有()
A.压杆的材料性质
B.截面的形状和尺寸
C.压杆的长度
D.外力的大小