题目内容

Consonants vary depending on where and how the air stream gets through, the place and movement of the tongue, and also whether the voice is used or not.（）

A. 对
B. 错

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更多问题

The vowel is produced without (or with little) restriction during its production and is always voiced.（）

A. 对
B. 错

简答题简述双语言的要求。

灌砂筒放在试坑上并打开开关后，当轻敲筒壁三次砂流入试坑，则关闭开关。

A. 对
B. 错

论述题试述建筑、雕塑、绘画的主要区别。