超星 - L4-句子词汇 - 查题吧

单选题

A resistor is a two-terminal electronic component that resists the flow of electrical current.

A. 阻挡
B. 电阻
C. 电流
D. 电子元件

单选题

The current flowing through a resistor is directly proportional to the voltage across the resistor’s terminals. This relation is represented with a well-known Ohm’s law: V = I×R.

A. 电流
B. 电压
C. 正比于
D. 欧姆定律

单选题

Color bands are usually used to represent the resistance value. The first and second band represent the numerical value of the resistor, the third band specify the power-of-ten multiplier.

A. 色环
B. 代表
C. 电阻值
D. 乘数

单选题

A capacitor is an electronic component consisting of a pair of conductors separated by a dielectric. A capacitor can store electrical charge in an electrical field.

A. 电场
B. 电容
C. 存储
D. 电荷

单选题

An inductor is an electronic component that can store energy in a magnetic field created by the electric current passing through it.

A. 磁场
B. 导体
C. 电感
D. 能量

单选题

A transformer is an electrical component that converts AC electricity from one voltage to another with little loss of power. The input coil is called the primary winding and the output coil is called the secondary winding.

A. 变压器
B. 转换
C. 初级绕组
D. 次级绕组

单选题

A transistor is a semiconductor device used to amplify electronic signals. The transistor amplifies current, and the amount of current amplification is called the current gain.

A. 电信号
B. 电流增益
C. 放大
D. 晶体管

单选题

A bipolar junction transistor ( BJT ) has terminals labeled base, collector, and emitter. For a field-effect transistor ( FET ) , the terminals are labeled gate , source, and drain, and a voltage at the gate can control a current between source and drain.

A. 基极
B. 发射极
C. 栅极
D. 漏极

单选题

A diode is a two-terminal semiconductor device that consists of a PN junction made of semiconductor material.

A. 二极管
B. PN结
C. 材料
D. 半导体

单选题

An integrated circuit ( IC ) , sometimes called a silicon chip or chip, is a semiconductor wafer on which thousands or millions of tiny resistors, capacitors, and transistors are fabricated.

A. 晶片
B. 集成电路
C. 芯片
D. 制造

1