题目内容

To measure current, the circuit must be broken to allow the meter to be connected in series. To measure (), the circuit is not changed, the meter is connected in parallel. To measure resistance, the component must be removed from the circuit.

A. resistance
B. voltage
C. current
D. sensor

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The four 10 kilo-ohms resistors are connected in () on the breadboard in the textbook.

A. series
B. parallel
C. measure
D. COMMON

矿业企业的劳动定员有（）。

A. 生产工人
B. 工程技术人员
C. 管理人员
D. 服务人员

劳动合同，是指劳动者与用人单位之间确立劳动关系，明确双方权利和义务的协议。

A. 对
B. 错

提高劳动生产率的有效途径是实行劳动报酬与劳动生产率挂钩的经济责任制，简称工效挂钩。

A. 对
B. 错