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【单选题】
如图,手机与音叉的位置保持不变,利用手机软件测出音叉发出的声音从30dB变为50dB。说明音叉振动的 ( )
A.
振幅变大
B.
音调变高
C.
频率变大
D.
音色改变
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参考答案:
举一反三
【单选题】Shawn Henry is mentioned in the last paragraph to
A.
demonstrate that he is one of the so-called government types.
B.
justify the intimate link between private and public sectors.
C.
show that companies closely cooperate with government.
D.
illustrate the help rendered by former officials to companies.
【单选题】温里药主要适用于()
A.
里热证
B.
阳虚证
C.
里寒症
D.
里实积滞证
E.
阴虚证
【判断题】Henry Wadsworth Longfellow is one of the most famous American realistic poets in 19th century.
A.
正确
B.
错误
【判断题】熔断器烧断的原因是由于通过的电压过高。
A.
正确
B.
错误
【单选题】导致新型冠状病毒肺炎的病原体属于下列哪种病毒?
A.
呼吸道病毒
B.
消化道病毒
C.
医源性病毒
D.
逆转录病毒
【多选题】Which one of the following is TRUE about Henry Ford?
A.
Henry Ford was born on July 30, 1863, in greenfield city, Michigan.
B.
Henry taught himself to be a steam engineer.
C.
Henry devoted himself to designing cars, and in 1896 he built a two-cylinder air-cooled four-horsepower vehicle
D.
In 1946, Ford was given an honorary award for his contribution to the automobile industry in the golden 50 years of the automobile.
【判断题】作为基准物质,其纯度应达到99%以上。
A.
正确
B.
错误
【单选题】在下列选项中,没有构成无限循环的选项是(C)
A.
int i=100;while(1){i=1%100+1;if(i>100)break;}
B.
for(;;)
C.
int k=1000;do{--k}while(k);
D.
int s=36;while(s>=0);++S;
【单选题】Which ONE of the following is the author of The Leather-Stocking Tales?
A.
Henry David Thoreau
B.
Washington Irving
C.
Edgar Allan Poe
D.
James Fennimore Cooper
【单选题】Henry James is one of the representatives of __________.
A.
Romanticism
B.
Realism
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