The fuel traded by gas station is potential danger and endanger factors , which exist certain risk for its workers, customers, and environment , especially city gas station .

同时，汽车加油站所经营的油料存在潜在的危险危害因素，势必会给其工作人员、用户和周围环境造成一定风险，尤其是城市加油站。

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The severe influence of the rocket engine property, especially its total thrust impulse and work time on the rocket flight performance has aroused great attention among technological workers.

发动机工作性能对火箭飞行性能的严重影响已引起众多研究人员的重视，尤其是火箭发动机推力总冲及其工作时间等重要参数。

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This appeals to blue-collar workers especially in places that are suffering manufacturing-job losses such as Pennsylvania, which holds its primary in two weeks' time, and Ohio, which Mrs Clinton won in early March.

ECONOMIST: Hillary Clinton sacks her strategist, Mark Penn