国际上1吨原油提炼汽油0.177吨、柴油0.383吨，成品油率平均为（）。
A.50.0%
B.56.0%
C.60.8%
D.65.0%
参考答案：D
These are your clothes. Put _____ on, please. [ ]
A. they
B. their
C. them
D. it
X线成像体层摄影原理。
