你可能感興趣的試題

Most conducting materials such as copper, aluminum, iron, nickel, and tungsten （）.

A.increase in resistance with increased temperature
B.increase in resistance with decreased temperature
C.decrease in resistance with increased temperature
D.increase in conductance with increased temperature

單項(xiàng)選擇題

The function of a rectifier is similar to that of a （）.

A.trap
B.regulating valve
C.check valve
D.filter