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【判断题】
高能激光武器是一种利用高能激光束来摧毁飞机、导弹、卫星等目标或使之失效的定向能武器。
A.
正确
B.
错误
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举一反三
【多选题】下列适合用于制备探针序列可有( )。
A.
寡核苷酸
B.
cDNA
C.
RNA
D.
外显子
E.
内含子
【单选题】My teacher used to _______ a bike to school, but now he is used to ________ a car to work.
A.
ride, driving
B.
ride, drive
C.
riding, drive
D.
riding, driving
【单选题】The example of Dr. Prathap Reddy is used to stress that ______.
A.
discussion of the cross-border flow of talent sounded a somber note
B.
migrants sent huge amounts of money home
C.
colonialism has disappeared in India
D.
returning emigres are turning into ecomonic dynamos
【单选题】The example of Dr Prathap Reddy is used to stress that .
A.
discussion of the cross-border flow of talent sounded a somber note
B.
migrants sent huge amounts of money home
C.
colonialism has disappeared in India
D.
returning emigres are turning into economic dynamos
【判断题】Australian Bachelors degrees are 3 years in duration.
A.
正确
B.
错误
【判断题】刀具材料的硬度越高,强度和韧性越低。()
A.
正确
B.
错误
【单选题】Whose name is used to call New World 'America' ?
A.
Columbus.
B.
Vespucci.
C.
Francois Dr. ake.
D.
Cartier.
【单选题】四棱豆果实的形状为?
A.
四棱状
B.
扁平状
C.
三棱状
D.
椭圆形
【判断题】刀具材料的硬度越高,强度和韧性越低。
A.
正确
B.
错误
【判断题】一般来说,刀具材料的硬度越高,强度和韧性就越低。()
A.
正确
B.
错误
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