两个数的积是245,一个因数不变,另一个因数缩小5倍,积是______.
两个因数的积是245,如果一个因数不变,另一个因数缩小5倍,
积是245÷5=49.
故答案为:49.
Effective teachers are those ________ the students they teach. They support them in ways that bring
out their best. [ ]
A. interested in
B. interesting to
C. are interested in
D. are interesting to
男性,51岁,胸痛发作24小时,心悸、气短、面色苍白,心电图ST段抬高,有慢性支气管炎史和20年吸烟史,查血清AST256U/L,LD4640U/L,CK1560U/L,CK-MB18%,最有可能的原因是()
A.急性肾衰
B.骨骼肌疾病
C.肝硬化
D.急性心肌梗死
E.二尖瓣狭窄致有心衰竭