慢性肾盂肾炎主要辅助检查项目应是().
A.双肾B超
B.双肾CT
C.静脉肾盂造影
D.肾动脉造影
E.肾活检
参考答案:C
—There ______ be anybody in the classroom, for the lights are off.
—I’ll go and check.
A.mustn’t
B.won’t
C.needn’t
D.can’t
对捞渣操作有什麽要求?