以下属于库存商品物流变化的是()
A.聚合
B.老化
C.风化
D.干燥
参考答案:D
下列血小板聚集诱导剂中哪一种活性最强()
A.ADP
B.肾上腺素
C.凝血酶
D.TXA2
E.PAF
The new group of students is better-behaved than the other group who stayed here _____.
A.early
B.earlier
C.earliest
D.the earliest