...研发技术团队与国内一线名校名师共同研收回的集诊断（P-Pretest）、学习（C-Course）、答疑（Q-Question）、自检（S-Self-check）于一身的PCQS循环学习零碎就是这种第三方工具中的佼佼者。
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Changes to Delta's self-service check-in kiosk designs were launched across all worldwide locations in September on more than 2, 500 individual kiosks.
ENGADGET: Delta introduces Fly Delta app for iPad, iOS 6 Passbook integration
There's still an old-fashioned check-in counter, but most of the baggage drop points are self service.
WSJ: Flying Through the Airport
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