APU滑油冷却器是()
A.通过使用冷却空气风扇的冷空气降温
B.通过冷却的燃油对其降温
C.通过涡轮冷却器次级气流降温
D.以上都不对
参考答案:A
Don't go too far, _____ you might lose your way. It's not easy to find you in the
crowds. [ ]
A. so
B. or
C. but
D. and
下列尺寸不属于图纸基本幅面尺寸的是()。
(A)841mm³1189mm
(B)594mm³841mm
(C)420mm³594mm
(D)420mm³210mm