A helicopter making a round trip from a helideck with refueling capabilities to an unmanned platform will take 45 minutes each way. The helicopter should be carrying enough fuel to last（）.

A.45 minutes

B.1 hour and 15 minutes

C.1 hour and 30 minutes

D.2 hours

温经汤，用于( )

A．寒湿凝滞型痛经
B．肝肾不足型痛经
C．气滞血瘀型痛经
D．湿热壅阻型痛经
E．阳虚内寒型痛经