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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【多选题】下列（）情况下应进行机动性巡回检查。
A.
新投产和检修后的设备；
B.
兄弟单位或本厂发生的事故、异常或频发性故障的同类设备；
C.
对刚操作过或有重大缺陷的运行、备用设备；
D.
受自然条件变化较大（如洪水、台风、高温等）影响的设备。
【单选题】第二篇 Flying the Hypert Skies A little airplane has given new meaning to the term "going hyper. " The Hyper-X recently broke the record for air-breathing jet planes when it traveled at a h...
A.
It indicated the birth of a very fast airplane.
B.
It was self-powered, so it lasted only 11 seconds.
C.
It can transportcargo quickly and cheaply to the brink of space.
D.
It is a major milestone in the journey of making a new type of very fast airplanes.