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【多选题】
(多选)据媒体报道,叛逃英国的俄罗斯前特工利特维年科在伦敦离奇身亡,英国警方调查认为毒杀利特维年科的是超级毒药放射性元素钋( )若该元素发生α衰变,其半衰期是138天,衰变方程为 ,则下列说法中正确的是( )
A.
X原子核含有124个中子
B.
X原子核含有206个核子
C.
γ射线是由处于激发态的钋原子从较高能级向较低能级跃迁时发出的
D.
100g的 经276天,已衰变的质量为75g
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参考答案：
举一反三
【单选题】导致心率加快、传导速度加快、心肌收缩力增强的受体是
A.
α受体
B.
β1受体
C.
β2受体
D.
M受体
E.
N受体
查看完整题目与答案
【单选题】Identify the type of sentences below according to the complexity of sentence structures. When Cindy lost her temper, she also lost her manner.
A.
Compound-Complex
B.
Simple
C.
Compound
D.
Complex
查看完整题目与答案
【单选题】Identify the type of sentences below according to the complexity of sentence structures. The heavy rain started suddenly, so we stopped planting our trees.
A.
Compound-Complex
B.
Simple
C.
Compound
D.
Complex
查看完整题目与答案
【单选题】Identify the type of clause in the following sentence : The accelerating pace of both science and technology has forced many people to consider questions that formerly were the special concern of phil...
A.
定语从句
B.
同位语从句
C.
主语从句
D.
条件状语从句
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【单选题】—_____ come and join us in the game? —_____. But I must meet my aunt at the airport. [     ]
A.
Why not to; I think so
B.
Why don't you; I'm very' fired
C.
Why not; I hope so
D.
Why not you; I like it
查看完整题目与答案
【单选题】导致心率加快、传导加速、心肌收缩力加强的受体是(ZY2000)
A.
α受体
B.
β 1 受体
C.
β 2 受体
D.
M受体
E.
N受体
查看完整题目与答案
【单选题】Please identify the type of the following quotation.Martin Pasmore [detective chief inspector of Essex Police] said he had agreed with the Vietnamese Ambassador to the UK to a method of sharing finger...
A.
direct quote
B.
partial quote
C.
indirect quote
D.
/
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【单选题】Why are you ____ such a hurry? I must meet my aunt_____ the station.
A.
at...at
B.
in…at
C.
with…at
D.
in...in
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【单选题】导致心率加快、传导加速、心肌收缩力加强的受体是?
A.
α 1 受体
B.
β 1 受体
C.
β 2 受体
D.
M受体
E.
N受体
查看完整题目与答案
【单选题】通过银行收到销货款62 000元,其中属于上月应收货款12 000元,本月应收货款40 000元,预收下月货款10 000元,在权责发生制下,本月的收入应为( )元。
A.
50 000
B.
62 000
C.
40 000
D.
52 000
查看完整题目与答案
相关题目：
【单选题】导致心率加快、传导速度加快、心肌收缩力增强的受体是
A.
α受体
B.
β1受体
C.
β2受体
D.
M受体
E.
N受体
查看完整题目与答案
【单选题】Identify the type of sentences below according to the complexity of sentence structures. When Cindy lost her temper, she also lost her manner.
A.
Compound-Complex
B.
Simple
C.
Compound
D.
Complex
查看完整题目与答案
【单选题】Identify the type of sentences below according to the complexity of sentence structures. The heavy rain started suddenly, so we stopped planting our trees.
A.
Compound-Complex
B.
Simple
C.
Compound
D.
Complex
查看完整题目与答案
【单选题】Identify the type of clause in the following sentence : The accelerating pace of both science and technology has forced many people to consider questions that formerly were the special concern of phil...
A.
定语从句
B.
同位语从句
C.
主语从句
D.
条件状语从句
查看完整题目与答案
【单选题】—_____ come and join us in the game? —_____. But I must meet my aunt at the airport. [     ]
A.
Why not to; I think so
B.
Why don't you; I'm very' fired
C.
Why not; I hope so
D.
Why not you; I like it
查看完整题目与答案
【单选题】导致心率加快、传导加速、心肌收缩力加强的受体是(ZY2000)
A.
α受体
B.
β 1 受体
C.
β 2 受体
D.
M受体
E.
N受体
查看完整题目与答案
【单选题】Please identify the type of the following quotation.Martin Pasmore [detective chief inspector of Essex Police] said he had agreed with the Vietnamese Ambassador to the UK to a method of sharing finger...
A.
direct quote
B.
partial quote
C.
indirect quote
D.
/
查看完整题目与答案
【单选题】Why are you ____ such a hurry? I must meet my aunt_____ the station.
A.
at...at
B.
in…at
C.
with…at
D.
in...in
查看完整题目与答案
【单选题】导致心率加快、传导加速、心肌收缩力加强的受体是?
A.
α 1 受体
B.
β 1 受体
C.
β 2 受体
D.
M受体
E.
N受体
查看完整题目与答案
【单选题】通过银行收到销货款62 000元,其中属于上月应收货款12 000元,本月应收货款40 000元,预收下月货款10 000元,在权责发生制下,本月的收入应为( )元。
A.
50 000
B.
62 000
C.
40 000
D.
52 000
查看完整题目与答案
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