装一批电杆,每天装12根,30天装完,如果每天装15根,只要多少天装完?
设只要x天装完,
15x=12×30,
15x=360,
x=24;
答:只要24天装完.
为明确诊断,需要做的检查是
A.钡剂灌肠X线检查
B.腹部B超
C.腹部X线摄片
D.腹腔穿刺
E.妇科双合诊检查
I don't like this kind of TV shows because they're ______.[ ]
A. boring
B. wonderful
C. interesting
D. beautiful