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y calibrated. We have recalibrated it and find that the velocity, in order, should have been 8, 12, 16 and 20m/s.The concentration of the gas flowing in
the stack？
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更多“In the textbook Example 4.1, we have now discovered that the velocity measuring device was improperl”相关的问题
第1题
The passage may be taken from ______.
A．a magazine B．a textbook
C．a computer ad D．an instruction manual
第2题
The passage is probably taken from______.
A．an advertisement
B．a textbook
C．a news report
D．an instruction (说明书)
第3题
A、revised
B、being revised
C、revising
D、revise
第4题
The textbook the medical student was interested in was put away in a corner ______.
A．to prevent anyone from buying it
B．because the medical student might take it away
C．in case the medical student was tempted to buy it
D．because the medical student was tempted to buy it
第5题
The passage is most probably from______.
A．a literary biography
B．a science textbook
C．a term paper
D．a personal diary
第6题
Dr. Jason decided to help his students by______.
A．collecting used textbooks
B．writing a concise textbook
C．selling second-hand books
D．making public speeches
第7题
The failure in the exam made her very ______.
A．oppressed
B．expressed
C．depressed
D．impressed
第8题
第9题
Children take ______ at the age of 13.
A．private school exam
B．the Common Entrance Exam
C．national exam
D．no examinations
第10题
______ for the TOEFL exam in June, we took a training class in April.
A．Prepare
B．To prepare
C．Preparing
D．Prepared
第11题
A、Not good news
B、The exam is difficult
C、Not likely
D、It was put off yesterday
