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Boeing added larger, fuel-efficient engines to the MAX but moved them closer to the fuselage. This changed the handling characteristics of the plane and Boeing compensated with the MCAS, an automated system designed to keep the nose of the plane slightly raised in flight to avoid a mid-air stall.
Born in 1947, Xiao fled overseas in December 2012, the statement said.
Bilateral trade volume between China and the United States totaled 1.57 trillion yuan, up 5.3 percent year-on-year between January and May, contributing 13.5 percent of the country's foreign trade. China's trade surplus with the US increased to 154.83 billion yuan in May, from 140 billion yuan in April.
Boeing shares closed 3.3% lower at 3.37 after falling as much as 5.7% during the session.
Boeing said it also has developed improved training materials now being reviewed by the FAA and regulators around the world.
来源：资阳报