由于航班不正常原因,要求旅客变更承运人时,应征得()的同意后,方可签转。
A.出票人
B.承运人
C.被签转承运人
D.机组
参考答案:C
It was not until dark ______ he found that it was the correct way to solve the problem.
A.that
B.what
C.which
D.when
宫颈癌Ⅰa1期是指下列哪种情况
A.癌局限在上皮层内,未突破基底膜B.显微镜下间质浸润不超过1mmC.显微镜下间质浸润不超过3mmD.显微镜下间质浸润不超过5mmE.显微镜下间质浸润不超过7mm