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【单选题】
能选择性与烟碱结合的受体是A.
α受体
B.
β受体
C.
M受体
D.
N受体
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举一反三
【单选题】A ______ is a person who is visiting a place when he or she is on holiday. [ ]
A.
tourist
B.
singer
C.
Dentist
D.
Waiter
【单选题】A _________ is a person who is having sightseeing for fun.
A.
clerk
B.
attraction
C.
restaurant
D.
tourist
【判断题】Tourist is a person who goes to visit a distance location, to see the sights, to visit friends and relatives or to do little else but relax or participate in leisure activities .
A.
正确
B.
错误
【单选题】The latter half of the last sentence in paragraph 3, "or one tourist for every person living in Spain" means _____.
A.
all the 37 million people living in Spain are tourists
B.
every Spanish is visited by a tourist every year
C.
every person living in Spain has to take care of a tourist
D.
every year almost as many tourists visit Spain as there are people living in that country
【单选题】The latter half of the last sentence in paragraph 3, 'or one tourist for every person living in Spain' means ______.
A.
all the 37 million people living in Spain are tourists
B.
every year almost as many tourists visit Spain as there are people living in that country
C.
every person living in Spain has to take care of a tourist
D.
every Spanish is visited by a tourist every year
【单选题】模板及支架的设计下列说法错误的是()
A.
模板及支架的结构设计宜采用概率理论为基础、以分项系数表达的极限状态设计方法
B.
模板及支架的设计计算分项中所采用的各种简化和近似假定，应有理论或试验依据，或经工程验证可行
C.
模板及支架应根据施工期间各种受力状况进行结构分析，并确定其最不利的作用效应组合
D.
支撑模板荷载的顶部水平杆可按受剪构件进行验算
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