麻黄入药部位是（）。
参考答案：干燥草质茎
–Whose advice do you think I should take?
–______.
A．You speak
B．That's it
C．It's up to you
D．You got it
100kV产生X线的最短波长是
A．0.124nm
B．0.0124nm
C．0.0124cm
D．1.24nm
E．1.24cm
