题目内容

‘+’ terminal positive polarity ( Red ).‘GND’ terminal earth and chassis ground ( Green ).‘－’ terminal negative polarity ( Green ).

A. 正极
B. 负极
C. 接地端
D. 机壳接地

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Digital meter indicates the output voltage ( Digital type ).Analog meter indicates the output voltage ( Analog type ).A/V select selects the meter indicates of the output voltage or current.Power control on/off switch

A. 电源开关
B. 电流/电压选择
C. 数字表
D. 模拟表

Master-Slave：Selects for Master ( internal control ) or Slave ( external remote control ) operation.

A. 外部远程控制
B. 内部控制
C. 主控模式
D. 从动模式

Constant Voltage Mode: Turn the DC CURRENT ADJUST knob fully clockwise. Then adjust the DC VOLTAGE ADJUST knob to obtain the desired output voltage, as indicated on the meter. The output current is displayed on the current meter.

A. 恒压模式
B. 直流电流
C. 顺时针旋转
D. 调节旋钮

Maintenance Fuse Replacement : Try to determine and correct the cause of the blown fuse, then replace only with a fuse of the correct rating and type.

A. 保险丝替换（更换）
B. 维修
C. 保险丝熔断
D. 等级和类型