問題詳情
19. Compared to the tail of electrically charged atoms, the tail of neutral dust particles isrelatively
(A) long
(B) curved
(C) unpredictable
(D) bright
(A) long
(B) curved
(C) unpredictable
(D) bright
參考答案
答案：B
難度：非常困難0
統計：A(0),B(0),C(0),D(0),E(0)
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