气滞血瘀型痛经首选方为
A．血府逐瘀汤 B．少腹逐瘀汤 C．膈下逐瘀汤 D．柴胡疏肝散 E．桃红四物汤
参考答案：C
The current 4 - year spot rate is 4% and the current 5 - year spot rate is 5.5%. What is the 1 - year forward rate in four years（）
A. 8.62%.
B. 9.58%.
C. 11.72%.
36V40W灯泡变压器初级电压为380V，初级电流为（）。
