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【单选题】
关于无气压或气压低引起气压制动系制动失效的原因。甲认为:空气压缩机传动带打滑就是引起上述故障的原因。乙认为:空气压缩机损坏或供气量小是其中之一。丙认为:单向阀卡滞或制动管路堵塞是其中之一。看法正确的是( )。A.
甲和乙
B.
C.
丙和甲
D.
均错
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举一反三
【单选题】—Tom graduated from college at a very young age. —Oh, he ______ have been a very smart boy then. [ ]
A.
should
B.
can
C.
must
D.
will
【简答题】Tom graduated from a ____(职业学校)and received good ____(职业培训).
【简答题】某事业单位以财政专项资金直接支付办公楼大修理费350000元,延长其使用寿命。
【单选题】“ Tom graduated from college at a very young age. ”
A.
must
B.
could
C.
should
D.
might
【单选题】Tom graduated from a famous university at a very young age. He _____ have been an outstanding student.
A.
must
B.
could
C.
should
D.
might
参考解析：
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