阿摩線上測驗
33. What is identified as a major obstacle to "Active Debris Removal" (ADR) efforts?
(A) The absence of a binding international legal structure to govern the process.
(B) The lack of robotic refueling interfaces.
(C) The physical impossibility of capturing objects traveling at orbital velocities.
(D) The high concentration of metallic oxides making navigation dangerous.
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統計： A(8), B(0), C(2), D(3), E(0) #3854435
統計： A(8), B(0), C(2), D(3), E(0) #3854435
