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【多选题】
在地铁内发生爆炸时下列做法正确的是____。A.
寻找简易防护物、如衣服、纸巾等捂鼻，采用低姿势撤离
B.
迅速按下列车报警按钮，使司机在监视器上获取报警信号
C.
疏散时听从指挥，通过车头或车尾疏散门进入隧道，向邻近车站撤离
D.
发生火情，依靠的消防器材进行灭火
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【简答题】阅读理解。 Mum gives little Tom ten yuan. Then little Tom goes shopping. He gets on the bus and sits down next to an old woman. Then he sees the old woman's handbag is open. There is ten yuan in it. He qui...
【单选题】【卡诺循环】如图表示的两个卡诺循环,第一个沿 ABCDA 进行,第二个沿 ABC'D'A 进行,这两个循环的效率 的关系及这两个循环所作的净功 W 1 和 W 2 的关系是
A.
W 1 = W 2
B.
W 1 = W 2
C.
W 1 > W 2
D.
W 1 < W 2
【单选题】_______with what little Tom said, the teacher decidedto take him as his new student.
A.
To satisfy
B.
Havingsatisfied
C.
Satisfied
D.
Satisfying
【单选题】Don't worry! Tom is busy (忙的) but he has time to finish it. [ ]
A.
a little / a little
B.
a little / a few
C.
little / little
D.
a few / little
【单选题】As soon as little Tom had _______ a little from his shock, his first thought was to get away . [ ]
A.
returned
B.
benefited
C.
survived
D.
recovered
【单选题】As soon as little Tom had ________ a little from his operation at his back, his first thought was to get out to meet his friends.
A.
returned
B.
survived
C.
absorbed
D.
recovered
【单选题】【卡诺循环】如图表示的两个卡诺循环,第一个沿 ABCDA 进行,第二个沿 ABC'D'A 进行,这两个循环的效率 的关系及这两个循环所作的净功 W 1 和 W 2 的关系是
A.
W1=W2
B.
W1=W2
C.
W1>W2
D.
W1
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