能使汽车可靠地停放在坡道上，起作用的是（）制动装置。
A、驻车
B、行车
C、排气
D、防抱死
参考答案：A
Mother often _____ elder brother _____ little brother. [ ]
A. mistake; for
B. mistook; as
C. mistakes; for
D. mistake; as
媒介管理原则的内容
