黑启动机组应置于厂用电允许的（）同时将自动电压调节器投人运行。
A.最低电压值
B.最高电压值
C.额定电压值的25%
D.额定电压值的50%
参考答案：A
When asked about their opinions about the schoolmaster, many teachers would prefer to see him step aside ________ younger men.(2011·湖北，30)
A．in terms of
B．in need of
C．in favor of
D．in praise of
体液的pH影响药物的转运及分布是由于它改变了药物的（）
A.水溶性
B.脂溶性
C.pK
D.解离度
E.溶解度
