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【单选题】
3  应用相切、相切、相切方式画圆时：
A.
相切的对象必须是直线
B.
相切的对象必须是直线
C.
相切的对象必须是直线
D.
相切的对象必须是直线
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【单选题】In most applications the graph on the oscilloscope display shows how signals change over time: the vertical (Y) axis represents and the horizontal (X) axis represents .
A.
voltage...time
B.
frequency...time
C.
voltage...period
D.
current...time
查看完整题目与答案
【单选题】Some multimeters have a "transistor test" function which provides a known base current and measures the collector current so as to display the transistor's .
A.
AC voltage gain
B.
DC current gain
C.
AC current gain
D.
DC voltage gain
查看完整题目与答案
【简答题】Each type of multimeter has its advantages. Used as a voltmeter, 1 multimeteris usually better because its resistance is much higher, 1 Mega-ohm or 10 Mega-ohm, compared to 200 kilo ohm for 2 multi-me...
查看完整题目与答案
【单选题】To write the topic sentence of an opinion paragraph, you should ________.
A.
take a stand on a given topic
B.
state a fact
C.
give the main reason for your opinion
查看完整题目与答案
【判断题】国务院学位办公室于1996年正式批准体育学设立武术学科专业方向硕士学位点。
A.
正确
B.
错误
查看完整题目与答案
【单选题】示波器是一种显示仪器。你可以用它来研究电信号 ( 例如交流电 流和电压 ) 的波形。它也可用来测量电压、电流、功率和频率 ; 实际上,它几乎可以测量涉及到振幅和波形的任何一种量。
A.
Oscilloscope is a display instrument. With it you can study the wave-form of an electric signal, such as the wave form of alternating current and voltage. You can measure voltage current, power, and frequency as well; in fact, almost any quantity that involves amplitude and waveform.
B.
Oscilloscope is a display instrument. With it you can study the wave-form of an electric signal, such as the wave form of alternating current and voltage. The heart of the oscilloscope is the cathode-ray tube (CRT).
C.
Oscilloscope is a display instrument. With it you can study the wave-form of an electric signal, such as the wave form of alternating current and voltage. You can measure voltage current, power, and frequency as well. The electron gun consists of a cathode , a control grid, an anode and two sets of deflection plates.
D.
Oscilloscope is a display instrument. With it you can study the wave-form of an electric signal, such as the wave form of alternating current and voltage. You can measure voltage current, power, and frequency as well; in fact, The heart of the oscilloscope is the cathode-ray tube (CRT). This consists of the base, neck ( an electron gun is included), bulb and the face -plate (screen).
查看完整题目与答案
【多选题】Each type of multimeter has its advantages. Used as a voltmeter, ( ) multimeter is usually better because its resistance is much higher, 1 Mega-ohm or 10 Mega-ohm,compared to 200 kilo-ohm for ( ) muli...
A.
an analog
B.
a digital
C.
voltage
D.
current
查看完整题目与答案
【多选题】Please find two appropriate examples to support the topic sentence.topic sentence: To become a good writer, a student should write often.
A.
For example, she should try to write every day because writing is important.
B.
For example, she should keep a journal and write in it every evening before bed.
C.
For example, she can find an email friend and write message frequently.
D.
For example, she never gives up writing.
查看完整题目与答案
【多选题】How can we write a successful topic sentence?
A.
Balance the topic sentence.
B.
Introduce yourself.
C.
State your topic sentence clearly.
D.
Give a reasonable opinion.
查看完整题目与答案
【单选题】An oscilloscope to display a voltage–time(V/t)graph,a graph of voltage against time. Voltage on the vertical or Y-axis, and time on the horizontal or X-axis.
A.
曲线图
B.
电压-时间
C.
垂直或Y轴
D.
水平或X轴
查看完整题目与答案
相关题目：
【单选题】In most applications the graph on the oscilloscope display shows how signals change over time: the vertical (Y) axis represents and the horizontal (X) axis represents .
A.
voltage...time
B.
frequency...time
C.
voltage...period
D.
current...time
查看完整题目与答案
【单选题】Some multimeters have a "transistor test" function which provides a known base current and measures the collector current so as to display the transistor's .
A.
AC voltage gain
B.
DC current gain
C.
AC current gain
D.
DC voltage gain
查看完整题目与答案
【简答题】Each type of multimeter has its advantages. Used as a voltmeter, 1 multimeteris usually better because its resistance is much higher, 1 Mega-ohm or 10 Mega-ohm, compared to 200 kilo ohm for 2 multi-me...
查看完整题目与答案
【单选题】To write the topic sentence of an opinion paragraph, you should ________.
A.
take a stand on a given topic
B.
state a fact
C.
give the main reason for your opinion
查看完整题目与答案
【判断题】国务院学位办公室于1996年正式批准体育学设立武术学科专业方向硕士学位点。
A.
正确
B.
错误
查看完整题目与答案
【单选题】示波器是一种显示仪器。你可以用它来研究电信号 ( 例如交流电 流和电压 ) 的波形。它也可用来测量电压、电流、功率和频率 ; 实际上,它几乎可以测量涉及到振幅和波形的任何一种量。
A.
Oscilloscope is a display instrument. With it you can study the wave-form of an electric signal, such as the wave form of alternating current and voltage. You can measure voltage current, power, and frequency as well; in fact, almost any quantity that involves amplitude and waveform.
B.
Oscilloscope is a display instrument. With it you can study the wave-form of an electric signal, such as the wave form of alternating current and voltage. The heart of the oscilloscope is the cathode-ray tube (CRT).
C.
Oscilloscope is a display instrument. With it you can study the wave-form of an electric signal, such as the wave form of alternating current and voltage. You can measure voltage current, power, and frequency as well. The electron gun consists of a cathode , a control grid, an anode and two sets of deflection plates.
D.
Oscilloscope is a display instrument. With it you can study the wave-form of an electric signal, such as the wave form of alternating current and voltage. You can measure voltage current, power, and frequency as well; in fact, The heart of the oscilloscope is the cathode-ray tube (CRT). This consists of the base, neck ( an electron gun is included), bulb and the face -plate (screen).
查看完整题目与答案
【多选题】Each type of multimeter has its advantages. Used as a voltmeter, ( ) multimeter is usually better because its resistance is much higher, 1 Mega-ohm or 10 Mega-ohm,compared to 200 kilo-ohm for ( ) muli...
A.
an analog
B.
a digital
C.
voltage
D.
current
查看完整题目与答案
【多选题】Please find two appropriate examples to support the topic sentence.topic sentence: To become a good writer, a student should write often.
A.
For example, she should try to write every day because writing is important.
B.
For example, she should keep a journal and write in it every evening before bed.
C.
For example, she can find an email friend and write message frequently.
D.
For example, she never gives up writing.
查看完整题目与答案
【多选题】How can we write a successful topic sentence?
A.
Balance the topic sentence.
B.
Introduce yourself.
C.
State your topic sentence clearly.
D.
Give a reasonable opinion.
查看完整题目与答案
【单选题】An oscilloscope to display a voltage–time(V/t)graph,a graph of voltage against time. Voltage on the vertical or Y-axis, and time on the horizontal or X-axis.
A.
曲线图
B.
电压-时间
C.
垂直或Y轴
D.
水平或X轴
查看完整题目与答案