图6-5为一加热器。利用工艺上主要介质的废热来加热某物料,物料的出口温度需要保持恒定。为此设计温度控制系统,利用改变进入加热器的载热体流量来控制物料出口温度。但由于载热体为工艺上的主要介质,其总流量是不能改变的,且其废热用来加热物料有足够的余量。试根据上述情况选择控制阀的型式,并画出其控制方案图。
第1题
A、very good
B、much good
C、very better
D、much better
第2题
The writer includes the example of watching TV in Paragraph 4 for the purpose of ______.
A.illustrating that watching TV itself is a source of low-level confusion
B.recommending that watching TV is an antidote to removing confusion
C.indicating that TV viewers cannot remember all its programs
D.supporting the view that all people poor and rich, enjoy watching TV
第3题
I believe watching TV is ________ listening to radio.
A.so good or better than
B.like good or better than
C.as good as or better than
D.as good as or better
第5题
Once the excitement of watching TV all day has______off, holidays can be boring.
A.shown
B.laid
C.worn
D.passed
第6题
Once the novelty of watching TV and videos all day has ______, there is nothing to do.
A.worn away
B.worn down
C.worn off
D.worn out
第7题
______ watching TV, you can learn about the latest news from all over the world.
A.On
B.Without
C.By
D.In
第8题
The woman wants to go to the movies because
A.she is tired of staying home all day.
B.there is a good film in the neighborhood theater.
C.she enjoys going to the movies.
D.she is sick of watching TV every day.
第9题
—I think I shall read a book instead.— ().
A、Great. Watching TV programme is much better.
B、No way. Our TV set doesn’t work now.
C、OK. Let’s turn on the TV set.
D、Good idea. That‘s much better than watching a bad TV programme.
第10题
A.or; and
B.or; but
C.and; or
D.and; and
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