The energy ______ by the chain reaction is transformed into heat.

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问题 The energy ______ by the chain reaction is transformed into heat.

选项 A、transferred
B、released
C、delivered
D、conveyed

答案B

解析 根据句中的chain reaction(连锁反应)可知应该是release energy“释放能量”。transfer转移,调任,转学;deliver递送,陈述,发表(演说等);convey传达,转让。句意:连锁反应释放出的能量转换成热量。
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