在中国交通图上量得沈阳到西安的直线距离为5cm,两地的实际距离为1500km,该图的比例尺是[ ]
A.1:30000000
B.1/3000000
C.
D.三万分之一
答案:A
One of the advantages with the new tool is that it is users ____. Users can handle it with less effort and more convenience.
A.friendly
B.good
C.well
D.pleased
磺酰脲类降血糖的主要不良反应是()
A.肾损伤
B.乳酸血症
C.黏膜出血
D.粒细胞减少及肝损伤
E.肾上腺皮质功能减退