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[主观题]

The theoretical linguistic background of the Audiolingual Method is______.A.Latin grammarB

The theoretical linguistic background of the Audiolingual Method is______.

A.Latin grammar

B.Audiolingualism

C.Structuralism

D.generative-transformational grammar

提问人:网友apple_cug 发布时间:2022-01-06
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更多“The theoretical linguistic bac…”相关的问题
第1题
The maximum possible efficiency of a class A amplifier is equal to _______

A、30%

B、25%

C、20%

D、15%

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第2题
Class C amplifiers are used mostly in ______ circuits.

A、audio

B、power amplifier

C、digital

D、tuned

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第3题
A class A amplifier ______.

A、conducts through 360° of the input waveform

B、conducts through 180° of the input waveform

C、conducts between 180° and 360° degrees of the input waveform, depending on the amount of dc bias

D、conducts through less than 180° of the input waveform

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第4题
A class AB transistor amplifier using complementary transistors is biased by power supply that is ±18Vdc. The value of VCE(OFF) for either transistor is approximately equal to ______.

A、8 V

B、10 V

C、18 V

D、36 V

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第5题
With transformer coupling the maximum theoretical efficiency of a class A amplifier can be increased up to _______.

A、60%

B、55%

C、50%

D、45%

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第6题
A class A amplifier has an 8 VPP output that is being applied to a 200 Ω load. What is the total ac load power?

A、320 mW

B、640 mW

C、40 mW

D、80 mW

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第7题
Class B amplifiers _______.

A、provide an output signal for half the input signal cycle

B、usually contain an LC tank circuit in the BJT collector circuit

C、usually contain a single BJT that conducts through 360° of the ac input cycle

D、usually contain a single BJT that conducts through 270° of the ac input signal

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第8题
Impedance matching is important for ____.

A、maximum voltage transfer from source to load

B、maximum power transfer from source to load

C、maximum impedance transfer from source to load

D、maximum current transfer from source

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第9题
The crossover distortion in a class B amplifier is prevented by _______.

A、biasing the individual transistors deeply into cutoff

B、biasing the transistors just slightly above cutoff

C、biasing the transistors just slightly into cutoff

D、adjusting the load resistance so that the transistor will turn on and off faster

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第10题
Power amplifiers are typically used to drive low impedance loads.______
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