题目

For years, there has been a bias (偏见) against science among clinical psychologists (临床心理学家). In a two-year analysis to be published in November in Perspectives on Psychological Science, psychologists led by Timothy B. Baker of the University of Wisconsin charge that many clinical psychologists fail to “provide the treatments for which there is the strongest evidence of effectiveness” and “give more weight to their personal experiences than to science.” As a result, patients have no guarantee that their “treatment will be informed by … science.” Walter Mischel of C要组成如图7所示的电路，用来测定一待测电阻R的阻值（估计阻值范围在30~50Ω之间），给你下列器材：电流表一个（量程0~0.6A、0~3A），电压表一个（量程0~3V、0~15V），干电池一节，蓄电池组一个（12V），滑动变阻器RO和开关S各一个，导线若干。组成电路时，电源应选　　 　　　，电压表量程应选　　　　　　 ，电流表量程应选　　　　　　 。实验过程中，要增加R两端的电压，RO的滑片应向　　　　　 移动。（填“左”或“右”）