220kV线路由运行转检修,参考操作时间是()分钟。
A.30
B.40
C.50
D.60
参考答案:C
女,39岁。婚后8年未避孕未怀孕,月经规律,痛经重,月经来潮12小时子宫内膜活检为分泌期宫内膜,B超下通液输卵管通而不畅,男方精液化验精子数6200万/ml,活力60%。
如进一步的检查发现为子宫内膜异位症,首选的治疗方法为()
A.ICSI
B.输卵管通液
C.腹腔镜手术
D.IVF-ET
E.GIFT
The work is really very difficult; _________ it's very interesting. [ ]
A. yet
B. however
C. still
D. at the some time