关于CT定位相扫描的叙述，错误的是（）

A.扫描机架作360°旋转

B.检查床单向平移

C.X射线持续曝光

D.球管位于12点钟位置

E.病人仰卧保持不动

She may have been caught in the heavy traffic, ____ she won’t arrive here by five o’clock.

A．in case　　

B．in case of　　

C．in that case　

D．in which case