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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】In the wake of 11 September, Visionics, a leading manufacturer, issued a fact sheet explaining how its technology could enhance airport security. They called it "protecting civilization from the faces...
A.
any way, the face-recognition technology is good enough to frighten the terrorists
B.
the industry will have to recognize the real situation and work hard to improve the technology
C.
all the claims are premature
D.
we must not expect too much
【简答题】当特征福射通过试样燕气时,被下列哪种粒子吸收: A.激发态原子A. 离子
B.
基态原子
C.
分子
D.
:C
E.
r>4、在原子分光光度计中,最广泛采用的光源是:
F.
空心阴极灯
G.
无极放电灯
H.
氢灯
I.
钨灯