血小板第3因子有效性测定结果为活性减低时,符合下列哪项疾病()
A.血小板增多症
B.原发性血小板减少性紫癜
C.继发性血小板减少性紫癜
D.血小板无力症
参考答案:D
—He asked her_________the bag because it was too expensive.
A.not to buy
B.to buy not
C.not buying
D.not buy
白血病中发病率最高的类型是()
A.急性淋巴细胞白血病
B.M1型
C.M2型
D.M3型
E.M4型