题目信息
A shortage of orders for Manto Aircraft's airliners has led analysts to predict that the manufacturer will have to lay off workers. The new order that Consolidated Airlines has just made for 20 of Manto's model TX jets does not provide a reason for the analysts to revise their predictions ,because simultaneously with its new order , Consolidated canceled its existing order for an equal number of Manto's larger, more expensive model Z jets.
Which of the following ,if true, most seriously weakens the argument?
A:Manto relies more heavily on outside subcontractors to provide the labor to manufacture the Model Z than it does the Model TX
B:The Manto employees who currently work to manufacture the model Z are not proficient at manufacturing the model TX
C:Manto includes all required maintenance work for the first five years in the price of each jet it sells .
D:Manto has had to lay off workers several times within the past ten years but has typically rehired many of the workers when it subsequently received new orders
E:A large number of the airliners in Consolidated fleet are at the beginning of their expected service life
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正确答案：
A:Manto relies more heavily on outside subcontractors to provide the labor to manufacture the Model Z than it does the Model TX
此题说因为缺少订单某飞机公司将裁员，虽然有客户新订了２０架新飞机ＴＸ但是却取消了更贵的飞机Ｚ，
问反驳。
选项分析：
Ａ 正确。该公司更依靠其他外包商来生产Z,说明新机型TX需要该公司自己的员工生产，因此不会裁员。
Ｂ 制造飞机Ｚ的员工和ＴＸ员工人数比较，原文没想讨论这部分人数比，无关。
Ｃ 这公司卖飞机后有什么后续服务，无关。
Ｄ 当这公司接单时雇人，没单子时裁员。这选项其实说的是一个中性的内容，没法造成原文可性度的改变，排除。
Ｅ 正在组建的机队正在服役初期，无关。
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