变压器外廓至后壁及侧壁的距离，容量1000kVA及以下者不应小于（）。
A.0.3m
B.0.4m
C.0.5m
D.0.6m
参考答案：D
James took the magazines off the little table to make ____ for the television. [ ]
A. room
B. area
C. field
D. position
（EMB145）方向舵液压作动器有（）个。
A.1个
B.2个
C.3个
