题目内容

液体固定相就是将固定液注入色谱柱中充当固定相。

A. 对
B. 错

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A. 编译期错误
B. 运行期错误
C. 运行后,浏览器上显示:buffer is null
D. 运行后,浏览器上显示:buffer is ABC

A. transient
B. finally
C. throw
D. static

A. Base obj = new Derived();
B. Derived obj = new Base();
C. Base obj = new Base();
Derived obj = new Derived();

A. 0
B. 1
C. 2
D. 3