[判断题]在列车运行速度不超过120km/h的区段，当两架信号机间的距-我要搜题网

[单项选择]给予酚妥拉明后，再给予肾上腺素可出现
A. 血压升高
B. 血压下降
C. 血压不变
D. 血压先降后升
E. 血压先升后降

[单项选择]电除尘器中水煤气的含氧量，正常操作时应小于0.6%，大于0.6%时，应发出报警信号；达到（）%时，应立即切断电除尘器的电源。
A. 0.8
B. 1
C. 1.2
D. 1.5

[判断题]信号表示器分为道岔、脱轨、进路、发车、发车线路、调车及车挡表示器。
A.正确
B.错误

[不定项选择题]共用题干 By the year 1927,Dr. Andrew Manson had a reputation.His practice of medicine was not large,but all his patients had the greatest confidence in him.He(51)______gave medicines, but when he did so,he gave the newest,best,and often the most(52)______medicines on the market.By his use of modern medicines,Manson once prevented a serious disease from(53)______in his town,although the rest of the town suffered badly.
The committee of the Medical Society ought to have been thankful to Manson,but a few of its members,led by Chenkin,were(54)______of his success.Though Manson had many friends, he also had(55)______.
Andrew sometimes asked himself why he and Christine had remained in Manchester after the death of their child.His coal dust experiments were his only(56)______for staying,he could not leave the mines till he had completed his experiments.
He now had a great deal of information about the(57)______of coal bust on the miners' lungs.But,in order to(58)______his facts,he decided to make a few experiments on small animals,to study the action of the dust on their lungs.Here,his real problem began.Taking care to cause the animals as little(59)______as possible;Andrew made some extremely(60) ______experiments,which proved all his beliefs.He felt proud and excited.But then,a few days later,he had a(61)______.
When Andrew returned home from work,he found Christine looking( 62)______."What's the matter?"he asked her. She hesitated,"I had some visitors today.""Oh?Who were they?""Five members of the committee,including Chenkin.They had heard about your experiments on the animals,and wanted to see your(63)_____.I told them that you were not at home,but they pushed me out and went into the room.When they saw the animals,one of the men shouted,"Oh, the poor creatures!"I tried to tell them that the animals had not suffered,but they(64)______to listen.They took the animals with them."
"What!"Andrew shouted.He thought for a minute,and then went into the hall to use the phone.But,just as he reached it,the phone bell rang."Hello!"he said angrily.Then his(65) ______changed.It was Owen."Look here,Owen.""I know,I know."Owen interrupted." This is a bad business.I'll come to see you now."Owen came.Before Andrew could speak,he said,"Did you get permission?"Andrew looked at him in surprise,"Permission for what?""To experiment on animals."
"Good Heavens,no!I never thought about it!""I'm afraid there will be trouble,"Owen said. "Some members of the committee feel very bitter against you.But don't worry,everything will be ok in the end." _________(54)
A.hopeful
B.harmful
C.proud
D.jealous

[判断题]在列车运行速度不超过120km/h的区段，当两架信号机间的距离小于400m时，前架信号机的显示，必须完全重复后架信号机的显示。A.正确B.错误

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[判断题]在列车运行速度不超过120km/h的区段，当两架信号机间的距离小于400m时，前架信号机的显示，必须完全重复后架信号机的显示。
A.正确
B.错误