yes, its true tho hahaha
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when conducting research on human subjects, minimize harms and risks and maximize benefits; respect human dignity, privacy, and autonomy; take special precautions with vulnerable populations; and strive to distribute the benefits and burdens of research fairly.
when conducting research minimize harms and risks and maximize benefites
answer: at double-line junctions trains passing over the diamond crossings evidently block traffic going in the opposite direction to that in which they are travelling