2. 外语
  3. The amount of heat produced by this electrical apparatus is ______ at will by turning a small handle.

The amount of heat produced by this electrical apparatus is ______ at will by turning a small handle.

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问题 The amount of heat produced by this electrical apparatus is ______ at will by turning a small handle.
选项 A、different
B、diverse
C、variable
D、various
答案C
解析 词义辨析题。本句的意思是：这台电器所产生的热量可以通过转动小手柄来随意调节。variable意为“可变的，易变的”，用于此处意为“热量可变的”；different意为“不同的”；diverse意为“各种各样的，不同的”，形容事物的多样性；various意为“不同的．各种各样的”，指同一范畴内的各类。
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