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【单选题】
28 The Pareto Principle is a technique used to determine which quality control problems in a particular process should be corrected. Which of the following statements best represents the philosophy employed by this principle?A.
In order to minimize financial losses from quality control problems, all problems which have a measureable cost should be corrected
B.
the majority of defects are caused by a small percentage of the identifiable problems. Improvement efforts should be reserved for these vital problems.
C.
in order to achieve zero defects, all quality control problems, including those which do not have a direct financial cost should be corrected.
D.
generally, 80% of the quality control problems are justifiable for correction via cost-benefit analysis. The remaining 20% are not financially worthy of improvement efforts.
E.
A and D
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【单选题】Any alteration in design would mean re-setting our machines, and the cost of this would be prohibitive ____ you could place an order for more than 5,000.
A.
until
B.
with
C.
unless
D.
when
【单选题】Piston rings must be used to provide the necessary seal.的正确译文是
A.
发动机由上百个部件组成。
B.
发动机的曲轴必须旋转。
C.
活塞环安装在环槽内。
D.
活塞环用于提供必要的密封。
【单选题】氨基糖苷类抗生素的主要作用机制是:
A.
抑制细菌细胞壁的合成
B.
干扰细菌的叶酸代谢
C.
抑制细菌DNA的合成
D.
抑制细菌蛋白质的合成
E.
抑制细菌RNA的合成
【简答题】Robbie is furious that the newly revised rules mean he would not be qualified for any of the major aw______.
【单选题】These piston rings are so badly worn that they must be （）.
A.
renewed
B.
welded
C.
machined
D.
chromium-plated
【简答题】为了保证抗坏血酸含量测定的准确度,应该注意什么?
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