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【单选题】
下列说法中错误的是 1化学性质相似的有机物是同系物 2分子组成相差一个或几个CH 2 原子团的有机物是同系物 3若烃中碳、氢元素的质量分数相同,它们必定是同系物 4互为同分异构体的两种有机物的物理性质有差别,但化学性质必定相似 [ ]A.
1234
B.
只有23
C.
只有34
D.
只有123
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【单选题】What kind of service does Credit Karma offer?
A.
Records of a person's financial activities.
B.
Lower interest rates for loan repayments.
C.
Lifting up people's credit scores.
D.
Providing good saving choices.
【多选题】What kind of service does TCP service model include? ____
A.
connection-oriented service
B.
connectionless service
C.
reliable data transfer service
D.
unreliable data transfer service
【简答题】What kind of service does Sky Bar provide?
【单选题】What kind of service does Business First provide?
A.
Marketing
B.
Foreign investment
C.
Consulting
D.
Computer repair
【单选题】What kind of service does the hotel offer?
A.
laundry service
B.
free shuttle bus
C.
free taxi service
D.
free booking air ticket
【简答题】BT5: What kind of service is the male speaker asking for?
【简答题】What kind of service does the business center in the hotel provide? ______________________________ , sauna and Jacuzzi.
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