（EMB145）液压失效时，如何操作方向舵？（）
A.电动操作
B.气源作动
C.人工备份操作
参考答案：C
—What is the _______ of this word?
—It _______ to go on foot. [ ]
A. meaning, mean
B. means, mean
C. means, means
D. meaning, means
不割绒的化纤制纬起绒织物
