混凝土输送车用一搅拌混凝土时，必须在拌筒内加入水量的（）水
A. 2／3
B. 3／4
C. 1／2
D. 4／5
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多发伤患者饮食急性期指导患者暂（），为急诊手术做好准备。
企图排除社会大众参与的情形，使得政策问题远离公共议程，社会大众便没有任何参与的机会和希望的是（）。
A. 动员模型
B. 外在创始模型
C. 内在创始模型
D. 理性主义模型
Which statements concerning the correlation between the inner and outer instances of non-static inner classes are true？（）
A. Member variables of the outer instance are always accessible to inner instances， regardless of their accessibility modifiers.
B. Member variables of the outer instance can never be referred to using only the variable name within the inner instance.
C. More than one inner instance can be associated with the same outer instance.
D. All variables from the outer instance that should be accessible in the inner instance must be declared final.
E. A class that is declared final cannot have any inner classes.
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