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【单选题】
三相短路实用计算的内容是（ ）A.
短路电流周期分量起始有效值计算、任意时刻短路电流周期分量有效值的计算
B.
短路电流非周期分量有效值计算、短路电流周期分量起始有效值计算
C.
短路电流周期分量起始有效值的计算
D.
短路电流周期分量稳态有效值计算
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反馈参考答案：
举一反三
【多选题】对于尺寸链封闭环的确定,下列论述正确的有 。
A.
图样中未注尺寸的那一环
B.
在装配过程中最后形成的一环
C.
精度最高的那一环
D.
在零件加工过程中最后形成的一环
【单选题】Two main lubricating oil pumps are usual and are obligatory in _____.
A.
container ships
B.
bulk carriers
C.
passenger ships
D.
barges
【单选题】听力原文： A 'typical' British family used to consist of mother, father and two children, but in recent years there have been many changes in family life. Some of these have been caused by new laws and oth...
A.
High rate of divorce in Britain.
B.
Generation gap in Britain.
C.
Changes in family life in Britain.
D.
One-parent families in Britain.
【单选题】“十二五”时期，实施更加积极的就业政策，要大力发展（ ）。
A.
劳动密集型产业、服务业
B.
服务业、小型微型企业
C.
劳动密集型产业、小型微型企业
D.
劳动密集型产业、服务业和小型微型企业
【简答题】合格品直接分拣入()。
【单选题】听力原文： A 'typical' British family used to consist of mother, father and two children, but in recent years there have been many changes in family life. Some of these have been caused by new laws and oth...
A.
Different social attitudes and greater life span.
B.
Changed divorce and remarriage rates.
C.
Sense of independence and different tastes of life.
D.
Less interest in family life.
【单选题】听力原文：M: I'll take these three records. Are they $2.5 each? W: These two records are, but this one is 50 cents more,. Q: How much will the man pay for the three records? (19)
A.
7.5 dollars.
B.
8 dollars.
C.
8.5 dollars.
D.
9 dollars.
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