题目内容

Laser weapons can be divided into three categories, They are ( ).

A. blinding weapon
B. Close-range tactical weapon
C. Deaf weapon
D. Long-distance strategy weapon

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The English abbreviation for laser is ( ).

A. LSAER
B. LSEAR
C. LASER
D. RELAS

( ) was recommended to name “Amplification of Stimulated Radiation” as"激光".

A. Qian Zhongshu
B. Qian Xuesen
C. Zhou Enlai
D. Mao Zedong

In 1917, ( )reinterpreted the theory of "the interaction between light and matter".

A. Darwin
B. Newton
C. Mayman
D. Einstein

After the atoms absorb energy, they can achieve a transition from a low energy level to a high energy level.

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