病原菌经局部人血，无严重症状称为
A．败血症B．毒血症C．内毒素血症D．脓毒血症E．菌血症
参考答案：E
A．U=vBl，流过固定电阻R的感应电流由b到d
B．U=vBl，流过固定电阻R的感应电流由d到b
C．U=vBl，流过固定电阻R的感应电流由b到d
D．U=vBl，流过固定电阻R的感应电流由d到b
While working abroad, U. S. citizen Dirk Senik purchases a foreign bond with an annual coupon of 7.5 percent for 95.5. One year later, the exchange rate between the dollar and the foreign currency remains unchanged and he sells the bond for 97.25, resulting in a holding period return of 9.7 percent. If the foreign currency had depreciated in relation to the dollar, Senik’s return would be:（）
A. greater than 9.7 percent.
B. equal to 9.7 percent.
C. less than 9.7 percent.
vBl
vBl