Under the original Artemis architecture, NASA planned on multiple versions of the SLS rocket, ranging from the "Block 1" vehicle currently in use to a more powerful EUS-equipped Block 1B and eventually an even bigger Block 2 model using advanced solid rocket boosters. The latter two versions required use of a taller mobile launch gantry, already well under construction at the Kennedy Space Center.
消费券更多发挥的是短期刺激作用，从长远来看，要想持续激发市场热度，释放文旅潜力，就必须下足券外功夫。
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Elsewhere, the protests are becoming more violent.
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