题目内容

A common way to develop a thesis is to begin by considering the _______ of the essay, and then turn the topic into a thesis by ___________ down to a viewpoint or _____________.

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A sub-thesis is considered as a _______that will be used as the ________ idea of each section or paragraph.

What are the questions you should ask to ensure that your thesis is effective and clear?1) Is there an argument?2) Is there a _________________?3) Is it _____________?4) It is specific?5) Does it declare its _____________?

单相变压器通入正弦激磁电流,二次侧的空载电压波形为()

A. 正弦波
B. 三角波
C. 方波
D. 锯齿波

变压器接在电网上运行时,变压器()将由于种种原因发生变化,影响用电设备的正常运行,因此变压器应具备一定的调压能力

A. 一次测电压
B. 二次测电压
C. 最高电压
D. 额定电压

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