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【单选题】
汽轮机热态启动时若出现负胀差主要原因是( )。A.
冲转汽温度过低
B.
暖机时间过短
C.
冲转时蒸汽温度过高
D.
暖机时间过长
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皮皮学刷刷变学霸
举一反三
【简答题】Who asked the author such a question?
【单选题】One thing that is obvious to the author is that _______.
A.
animals have their own thinking
B.
animals do things scientists tell them to do
C.
animals think for their own purpose if they can think
D.
animals think when scientists want them to
【单选题】The author became a little impatient for ____.
A.
he couldn't stand up with the shoe repairer's modest attitude
B.
he was in a hurry to meet a friend
C.
the shoe repairer was sad and did nothing about his torn shoes
D.
it took the shoe repairer a long time to have his shoes repaired
【单选题】The author wanted to get the job _____
A.
to meet a husband
B.
to train as a nurse
C.
to support herself in her education
D.
to support her aged parents
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