LC谐振回路的通频带计算公式为()。
参考答案:BW0.7= f0/Q
As a basketball player, you should always keep in mind that it’s not the winning, but the taking part__________really count.
A.what
B.which
C.that
D./
输卵管妊娠未破裂的超声图像为
A.B超提示子宫增大,宫内见双囊状结构B.B超提示子宫正常大,宫内见假孕囊,宫旁见3cm×3cm×2cm混合块,双卵巢正常C.B超提示子宫正常大,左卵巢内见孕囊及胚芽D.B超提示子宫正常大,双卵巢正常,子宫直肠陷凹积液暗区E.B超提示宫体正常大,宫颈扩大,其内见混合性结构