Verify the complaint. Ask the driver then check the vehicle. Make sure the problem actually occurs by using an operational check.

核实故障。询问驾驶员，然后再检查汽车。确定故障的确是由相关操作引起的。

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An operational check of each part or system operated by the crew while in flight to establish that, during flight, instrument readings are within normal range.

当飞行时飞行员可以操纵的每一个系统或部件都要进行操纵，以确定量产飞机与原型机有着相同的性能；在飞行期间，仪表读数要在正常范围之内。

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An operational check of the trim, controllability, or other flight characteristics to establish that the production aircraft has the same range and degree of control as the prototype aircraft.

配平、操纵性、或者其他飞行特性的操纵检查，以确定量产型飞机与原型飞机有着相同的程度和范围的操纵性能。

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However, if entrepreneurs want to achieve operational excellence while keeping technology investment in check, they have to be able to at least speak the language.

FORBES: Magazine Article

Since it became operational in 1998, the National Instant Criminal Background Check System (NICS) has been an essential tool in the effort to ensure that individuals who are prohibited under Federal or State law from possessing firearms do not acquire them from Federal Firearms Licensees (FFLs).

WHITEHOUSE: The White House

Check back next Tuesday for step 4 on finding and leveraging operational efficiencies.

FORBES: Step 3 for a Successful Startup: The Importance of Market Research