为了按规定时间反风，加快停机操作，2K56型通风机备有刹车装置。
参考答案：对
（2014年(春)重庆市高三考前冲刺测试卷）2. For many, winning remains __ dream, but they continue trying their luck as there're always __ chances that they might succeed.
A．/; /
B．a; the
C．a; /
D．the; the
蒸汽吊车在运转中，轴瓦的温度一般不应超过（）℃。
A.50
B.70
C.80
D.100
