单层扁平上皮见于（）
A．肾小管腔面
B．表皮
C．子宫腔面
D．胸膜表面
参考答案：A
摄影曝光时kV表有所下降，这一现象的正确解释是（）
A.曝光引起电源电压正常降落
B.灯丝次级有短路
C.高压初级有短路
D.千伏表故障
E.千伏表补偿电路故障
He was suddenly ________ with a strange illness when he was about to finish his work.
A．seized
B．caught
C．hit
D．controlled
