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【单选题】
How do music genres change with time?A.
Music genres of each decade are almost the same.
B.
Every decade has its unique music styles.
C.
Rock music is the one that has been popular through the decades since its birth.
D.
Music genres may develop into new branches in every decade.
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【简答题】discrete
【单选题】The variable is continuous or discrete: Student enrollment in a university over a number of years
A.
continuous
B.
discrete
【单选题】何先生，25岁，反复上腹部疼痛5年，本次因饮食不当使症状加重，恶心、呕吐咖啡色液体约800毫升，伴眩晕、口渴、心慌、尿少。查体：血压94/70mmHg，脉搏：110次/分钟。该病人的主要症状是（）
A.
腹痛
B.
呕血
C.
恶心呕吐
D.
眩晕
E.
便血
【单选题】Discrete signal x (n) refers to
A.
The value of n is continuous and the value of X (n) is arbitrary
B.
The value of n is discrete and the value of X (n) is arbitrary
C.
The value of n is continuous and the value of X (n) is arbitrary
D.
The value of n is continuous and the value of X (n) is discrete
【单选题】(题 1 ~ 3 共用题干) n 何先生, 25 岁,反复上腹部疼痛 5 年,本次因饮食不当使症状加重,恶心、呕吐咖啡色液体约 300ml ,伴眩晕、口渴、心慌、尿少。查体 BP 94/70mmHg , P 110 次 / 分。 病人的粪便可呈:
A.
脓血样
B.
果酱样
C.
米泔样
D.
柏油样
E.
白陶土样
【单选题】The variable is continuous or discrete: Number of $20 bills circulating in the United States at any time
A.
continuous
B.
discrete
【单选题】The variable is continuous or discrete: speed of an automobile in miles per hour
A.
continuous
B.
discrete
【单选题】The variable is continuous or discrete: Total value of shares sold each day in the stock market
A.
continuous
B.
discrete
【单选题】(接下来3题共用题干) 何先生,25岁,反复上腹部疼痛5年,本次因饮食不当使症状加重,恶心、呕吐咖啡色液体约300ml,伴眩晕、口渴、心慌、尿少。查体BP 94/70mmHg,P 110次/分。 1.该病人的主要症状是: ( )
A.
腹痛
B.
恶心呕吐
C.
眩晕
D.
呕血
E.
便血
【单选题】何先生，25岁，反复上腹部疼痛5年，本次因饮食不当使症状加重，恶心、呕吐咖啡色液体约800毫升，伴眩晕、口渴、心慌、尿少。查体：血压94/70mmHg，脉搏：110次/分钟。病人的粪便可呈（）
A.
脓血样
B.
果酱样
C.
米泔样
D.
柏油样
E.
白陶土样
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