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【多选题】
下列使用学衔性称谓正确的有( )
A.
博士
B.
C.
博士
D.
张硕士
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【多选题】下列有关黏流温度的叙述正确的是()
A.
高分子链越柔顺,黏流温度越低
B.
高分子链越刚性,黏流温度越低
C.
高分子的极性越大,黏流温度越高
D.
相对分子质量越大,黏流温度越高
E.
相对分子质量对黏流温度没有影响
【单选题】According to the professor, how do senior-level Japanese managers view their assignments abroad?
A.
They consider them to be permanent career opportunities.
B.
They use them to learn skills that they will use in Japan.
C.
They understand that the assignment is only temporary.
D.
They see them as a strategy for their retirement.
【简答题】某增塑PVC的黏流温度为122℃,玻璃化温度为32℃,其流动活化能为8.31kJ/mol,已知142℃时其黏度为10 3 Pa·s,60℃时的黏度为10 10 Pa·s。试分别计算其在42℃和150℃时的黏度。
【单选题】How do you do?
A.
How do you do?
B.
Good morning
C.
I'm fine.
D.
It's very nice
【单选题】How do you do?
A.
How do you do?
B.
Good morning
C.
I am fine
D.
It’s very nice
【简答题】某增塑PVC的黏流温度为122℃,玻璃化温度为32℃,其流动活化能为8.31kJ/mol,已知142℃时其黏度为10 3 Pa·s,60℃时的黏度为10 10 Pa·s。试分别计算其在42℃和150℃时的黏度。
【单选题】变动电流,其大小和方向均 时间而变化。
A.
不随
B.
C.
不确定
【单选题】One thing that managers do not have to understand is how computers work.
A.
Right
B.
Wrong
C.
Not mentioned
【简答题】How do managers at Apple look at meetings?
【简答题】试述影响聚合物黏流温度的结构因素。
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