引起出血性疾病较常见的因素是()
A.血管外因素
B.凝血因子缺乏
C.肝素或香豆类药物
D.抗凝血物质活性增加
E.血小板因素
参考答案:E
Financial markets will be disturbed as ______ business adjusts its working approaches and policies from an assumption of 3-3.5% potential output growth.
A.compulsory
B.conventional
C.contradictory
D.contemporary
影响牙石形成的因素是()
A.唾液成分
B.菌斑量
C.口腔卫生习惯
D.修复体的光洁度
E.以上均是