动车组车窗玻璃破损导致车厢密封失效时，限速120km/h运行。
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Spring tides occur（）.
A. at the start of spring，when the Sun is nearly over the equator
B. only when the Sun and Moon are on the same side of the Earth and nearly in line
C. when the Sun and Moon are at approximately 90°to each other as seen from the Earth
D. when the Sun，Moon，and Earth are nearly in line，in any order
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