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【单选题】
机油滤清堵塞而机油压力正常时，信号灯亮，蜂鸣器不响。信号灯亮，蜂鸣器也也同时发出警报，则是提示（）。
A.
无机油
B.
机油压力过低
C.
油位过低
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】患者,女性,25岁。自然分娩1周,突然大量阴道流血,检查发现子宫大而软,宫口松弛,阴道及宫口有血块堵塞,正确的处理措施是
A.
子宫切除
B.
行刮宫术
C.
开腹探查
D.
左侧卧位,吸氧
E.
子宫动脉结扎
【单选题】Some pessimistic experts feel that the automobile is bound to fall into disuse. They see a day in the not-too-distant future when all autos will be abandoned and allowed to rust. Other authorities, ho...
A.
How to render automobiles pollution-free.
B.
How to make smaller and safer automobiles.
C.
How to solve the problem of traffic jams.
D.
How to develop an automated subway system.