【单选题】In the photographer's finest pictures there is also a degree of ______ , which allows them to be interpreted in a variety of ways.
A. ambiguous
B. ambiguity
C. ambivalent
D. ambivalence
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【单选题】Tim stretched out a hand in apology for his thoughtless remarks and was________ by a firm handshake from Mark.
A. consulting
B. consulted
C. consoling
D. consoled
活塞销与活塞销座的配合是（）。
A. 间隙配合
B. 过渡配合
C. 过盈配合
活塞销与活塞销座的装配需要将活塞进行预热，原因是活塞销的热膨胀量大于活塞销座。（）
A. 对
B. 错
声音的特性有：
A. 物理性
B. 生理性
C. 表情性
D. 心理性
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