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【单选题】
下列铸件产生偏析的原因是（）。A.
合金过熔
B.
铸道设置不当
C.
包埋料与铸造合金匹配性差
D.
用离心铸造方法在合金成分比重差较大时易产生
E.
铸造后铸型冷却过慢
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反馈参考答案：
举一反三
【单选题】Fierce as they are faced with pressure, the students remain ________ and try hard to achieve their goals. [ ]
A.
conscious
B.
optimistic
C.
nfluential
D.
competitive
【多选题】What are the five formal steps to achieve the short-term and long-term goals of audiolingual method?
A.
Re cognition
B.
I mitation
C.
Repetition
D.
Variation and selection
【简答题】货票一式四联并带号码，甲联为（），乙联为报告联，丙联为（），丁联为运输凭证。
【多选题】What steps to take to achieve the organization's vision and mission according to the performance management?
A.
Planning and goal setting
B.
Performance reporting and evaluation,
C.
Feedback and coaching,
D.
The personal and professional development of people throughout the organization.
【单选题】When a business determines its overall goals and the steps it will take to achieve them, the business is conducting _____ planning.
A.
Mission
B.
Tactical
C.
Strategic
D.
Business-portfolio
【简答题】货票一式四联,甲联留发站存查;乙联为报告联;丙联为 ();丁联为运输凭证。
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