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刷刷题刷刷变学霸
举一反三
【单选题】第二篇 Sleep We all know that the normal human daily cycle of activity is of some 7 - 8 hours’ sleep alternating with some 16 - 17 hours’ wakefulness and that, broadly speaking, the sleep n...
A.
people hate the inconvenience of working on night shifts.
B.
your life is disturbed by changing from day to night routines and back.
C.
not all industries work at the same hours.
D.
it is difficult to find a corps of good night workers.
【单选题】急性蜂窝组织炎行骨三时相显像时，其影像特点是
A.
血流相、血池相正常，延迟相放射性明显增加
B.
血流相、血池相放射性明显增加，且消失迅速，延迟相正常
C.
血流相、血池相放射性明显增加，且消失缓慢，延迟相正常
D.
血流相放射性明显增加，血池相及延迟相呈放射性降低
E.
血流相、血池相及延迟相放射性均明显增加