A:1个
B:2个
C:3个
D:4个
It's said that there are plenty of hotels in that town. There ____________ be any difficulty for you to find somewhere to stay.
如图,两根电线杆相距Lm,分别在高10m的A处和15m的C处用钢索将两杆固定,求钢索AD与钢索BC的交点M离地面的高度MH.
猜字谜。
①十二月____
②十二月一日____
③半部春秋____
对下列实验中出现的异常情况的原因分析,合理的是( )