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【单选题】
下列换热器中,总传热系数量大的是( )。[1分]A.
列管式换热器
B.
套管式换热器
C.
板式换热器
D.
蛇管换热器
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【简答题】Plastics are considered one of the most serious pollutants causing environmental problems. The garbage containing plastics end up in the waterways that ually flow into the oceans. Accumulation (聚...
【简答题】数据链路层的协议数据单元是。
【单选题】Why do plastics antiques bring a shock to most people'?
A.
Because they are very fragile and hard to maintain.
B.
Because they might cause certain pollution to environment.
C.
Because plastics is so common and easy to find around people.
D.
Because people don't take plastics seriously.
【单选题】下列关于培训说法错误的是( )
A.
药企中只有关键人员才需要培训
B.
高学历人才上岗也需要岗前培训
C.
主要管理培训部门是人力资源部门
D.
培训内容是一般根据培训对象和培训需求制定的
【单选题】_________ his membership card, Tim decided to make a phone call to check whether there was something wrong.
A.
Not having received
B.
Not to receive
C.
Not received
D.
Having not received
【单选题】______ are chiefly derived from petroleum.
A.
Plastics today
B.
There are plastics today
C.
Because today plastics today
D.
Due to plastics today
【单选题】What arrangements did Tim make for accommodation?
A.
He bought an expensive house .
B.
He stayed in a company flat.
C.
He arranged to move in with a colleague .
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【单选题】下列关于培训说法错误的是( )
A.
药企中只有关键人员才需要培训
B.
高学历人才上岗也需要岗前培训
C.
主要管理培训部门是人力资源部门
D.
培训内容是一般根据培训对象和培训需求制定的
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