愈疮木基甘油β-芳基醚可表示为:()联接。
参考答案:β-O-4
When my sister left college, she got a job as reporter in a newspaper office.
A.a; the
B.不填; a
C.the; the
D.a; 不填
血小板减少性紫癜好发年龄是()
A.1~3岁
B.2~5岁
C.3~14岁
D.4~15岁
E.5~16岁