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【单选题】
在尺寸链计算中，下列论述正确的有（ ）。A.
封闭环是根据尺寸是否重要确定的。
B.
零件中最易加工的那一环即封闭环。
C.
增环、减环都是最大极限尺寸时，封闭环的尺寸最小。
D.
用极解尺寸链时，如果共有五个组成环，除封闭环外，其余各环公差均为0.10 mm，则封闭环公差要达到0.40mm以下是不可能的。
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【简答题】News report 2 Read the questions. Listen to the news report and choose the best answer to each question.
【简答题】News report 2 Read the questions. Listen to the news report and choose the best answer to each question.
【单选题】The gap between those at the lowest level and those at the highest level of income had increased, and is continuing to increase.
A.
substantially
B.
successfully
C.
succinctly
D.
sufficiently
【简答题】If three bonds are otherwise identical, the one exhibiting the highest level of positive convexity ismost likely the one that is: A. option-free B. callable C. putable
【单选题】Which of the following policy-holder is of the highest level of risk to have an accident?
A.
A single middle-aged lady who is driving alone to West coast for her summer vacation
B.
A unmarried young man who drives an economy car to work on weekday
C.
A single old man who drives a new luxury car to the rural area every weekend
D.
A married middle-aged lady who is travelling by train
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