消毒用新洁尔灭的浓度是()。
A、0.1%
B、1%
C、5%
参考答案:A
No matter how frequently ________, the works of Beethoven still attract people all over the world.
A.performed
B.performing
C.to be performed
D.being performed
原发性血小板减少性紫癜最主要诊断依据是
A.临床出血征象B.血小板减少C.毛细血管脆性试验阳性D.骨髓中巨核细胞的质与量的改变E.脾脏肿大