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【单选题】
双影直透法一般用于多大直径管子的环焊缝透照（）A.
Φ89mm以下；
B.
Φ76mm以下；
C.
Φ20mm以下；
D.
Φ10mm以下。
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【单选题】Heroes，________ Lei Feng，Liu Hulan and Huang Jiguang are good examples for usto lea
A.
10． Heroes，________ Lei Feng，Liu Hulan and Huang Jiguang are good examples for us to learn from A．like
B.
as
C.
such as
D.
for example
【单选题】The example of a young golfer is given to show that heroes may______.
A.
have a good and perfect family
B.
be exposed to various temptations
C.
let us down with their bad behavior
D.
serve as role models for most people
【简答题】Heroes have special qualities such as honesty, responsibility , respect, detemination, and ( encourage ) ______.
【简答题】Much has been said and written about heroes now, mainly because many people think we have too few of them. There are many different kinds of heroes, but they usually seem to have two things. First, he...
【简答题】A．Because they are well-made and the stories are interesting. B．Because the heroes have to cope with many problems and frustrations. C．Because the characters in the movies arc free to do whatever they...
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