GWD31-40 A shortage of orders for Manto Aircraft’s airliners has led analysts to predict that ] the manufacturer will have to lay 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 uets which of the following ,if true, most seriously weakens the argument? 1) Manto relies more heavily on outside subcontractors to provide the labor to manufacture the Model Z than it does the Model TX 2) The Manto employees who currently work to manufacture the model Z are Not proficient at manufacturing the model TX 3) Manto includes all required maintenance work for the first five years in the price of each jet it sells . 4) 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 5) A large number of the airliners in consolidated is fleet are at the beginning of their expected service life. 搜索过，没这题目的？ 请问这题目什么意思啊？看不明白。凭感觉选了个A | 
