秦艽抗炎的主要有效成分是()
A.挥发油
B.糖类
C.东莨菪碱
D.粉防己碱
E.秦艽碱甲
参考答案:E
(2013·杭州模拟)Children are excited about the approach of Christmas,
may bring great happiness to them.
A.it
B.which
C.what
D.that
80286的地址部件中设置有( )个地址加法器。
A.1
B.2
C.3
D.4