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【单选题】
金属焊接性可分为( )。A.
热焊接性和使用焊接性
B.
冶金焊接性和使用焊接性
C.
工艺焊接性和使用焊接性
D.
热焊接性和冶金焊接性
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反馈参考答案：
举一反三
【判断题】A PDM system can help moldemakers improve the efficiency of data management.
A.
正确
B.
错误
【判断题】Application of a PDM system in mold design can help the users to ensure the quality of their products.
A.
正确
B.
错误
【单选题】The two newspapers gave different ______ of what happened.
A.
versions
B.
editions
C.
productions
D.
texts
【单选题】—Look ______ the two children, they're Nick and Lily. —Oh, they're twin ______. [ ]
A.
at; brother and sister
B.
/; brothers
C.
of; sisters
D.
after; boys
【单选题】The musician along with his band members _____ ten performaces in the last three months.
A.
gives
B.
has given
C.
have given
D.
give
【简答题】实验发现电子吸收光谱并非线状光谱,吸收峰宽度约为1000—3000cm-1 原因:
【判断题】A PDM system can help moldmakers improve the efficiency of data management.
A.
正确
B.
错误
【简答题】All the girls swam in the lake except two, who _____ halfway. A．gave off B．gave up C．gave away D．gave out
【单选题】_________you gave me last night are of great use to me. [ ]
A.
The two pieces of advice
B.
The two advices
C.
Two pieces of advice D, Two advices
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