汽轮机润滑油压低于（）MPa，盘车电机联锁启动。
参考答案：0.015
–I really thought I’d pass the driving test.
–Oh, come on, _______, Bill.
A．you are wrong
B．better luck next time
C．best wishes
D．I agree with you
等腰三角形上的高与一腰的夹角为30°，则其顶角的度数为[ ]
A.60°
B.120°
C.60°或150°
D.60°或120°
