下列选项中,子宫内膜异位症引起不孕的重要原因是()
A.性交痛
B.盆腔粘连
C.黄体功能缺陷
D.子宫后位
E.卵巢巧克力囊肿
参考答案:B
It remains unknown ________ the peace talk between the two countries is going to lead.[ ]
A.where
B.when
C.how
D.why
类time可以输出12小时或24小时制的时间,现需要设计一个缺省构造函数,缺省值为0时0分0秒。该缺省构造函数为 【14】 。 # include<iostream. h> class Time int h.m,s; public: Time(int hour=0 .int min=0 ,int sec=0) settime(hour,min,sec); void settime(int hour,int min,int sec) h=hour; m=min s=sec; void show24()cout<<(h<1O"0":"")<<h<<":"<<(m<10"0":"")<<m<<":"MM(s<10"0":"")<<s<<end1 void show12( )int temp=(h==‖h==12) 12:h%12;cout<<(temp<10"0":"")<<temp<<":"<<(m<10"0":"")<<m<<":"<<(s<10 "0":"")<<s<<((temp>0 && h<12)"AM":"PM")<<end1 ; void main() Time t(15,43,21) t. show12(): t. show24()