But e-bikes containing lithium-ion batteries are a newer challenge. "When a battery fails, it doesn't necessarily ignite, it will often produce some off-gases," says Stephen Welch, senior lecturer at the University of Edinburgh's Fire Research Centre. "Those off-gases are toxic and flammable. If they accumulate, you can have an explosion risk."
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The former president’s remarks came in his opening statement in a deposition to the House of Representatives’ oversight committee, a day after his wife, Hillary Clinton, appeared before the same body and called the proceedings “partisan political theater” and “an insult to the American people”.，这一点在旺商聊官方下载中也有详细论述
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