The reason for the division of Class E and Class A airspace stems from the type of planes operating in them.

E 类和 A 类空域的划分取决于在这两类空域飞行的飞机类型。

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If a CSS class name is specified as a parameter, you will apply it to your HTML division element's appearance.

如果在参数中指定了css类名，就应用它控制HTML div元素的外观。

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It may represent a new class of failed stars straddling the division between stars and Jupiter-like planets.

它可能代表了一类新的“失败之星”，即介于恒星和类木行星之间的一种星体。

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At Bagram air field outside Kabul, Sergeant First Class Randy Geringer helps train 82nd Airborne Division soldiers to drive the M-ATV.

VOA: standard.2010.08.01

Watkins wanted to turn the school's sports into a big-time Division One program and thought that building a first-class stadium was the key.

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Going beyond the MIL-STD-810G certification with the ability to withstand a six-foot drop, and with a shock-mounted hard drive, magnesium alloy case and UL1604 Class I Division 2 certification, this mobile computer is optimized to operate in hazardous and mission-critical environments.

ENGADGET: Panasonic Toughbook 19 gets Core i5 grunt to match its grizzled visage

However, even if every state creates a public-only, small-school playoff division, the class warfare is going to get even more complicated.

FORBES: Class Warfare Heats Up In High School Sports