![US Army Boeing AH-64 Apache Military Helicopter at Air Base. Aviation and Rotorcraft. Transport and Airlift Editorial Stock Photo - Image of aviation, airplane: 237208738 US Army Boeing AH-64 Apache Military Helicopter at Air Base. Aviation and Rotorcraft. Transport and Airlift Editorial Stock Photo - Image of aviation, airplane: 237208738](https://thumbs.dreamstime.com/b/us-army-boeing-ah-apache-military-helicopter-air-base-aviation-rotorcraft-transport-airlift-fly-flying-kaposujlak-hungary-237208738.jpg)
US Army Boeing AH-64 Apache Military Helicopter at Air Base. Aviation and Rotorcraft. Transport and Airlift Editorial Stock Photo - Image of aviation, airplane: 237208738
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![U.S. soldiers prepare an AH-64 Apache helicopter for flight before conducting a security and reconnaissance U.S. soldiers prepare an AH-64 Apache helicopter for flight before conducting a security and reconnaissance](https://media.defense.gov/2013/Nov/21/2001123219/-1/-1/0/682427-H-SJE91-470.jpg)
U.S. soldiers prepare an AH-64 Apache helicopter for flight before conducting a security and reconnaissance
AH A- + H+ (acide) BOH B+ + OH- (base) Acide Base + H+ Pour la suite du cours (équilibre acido-base) on retiendra la notation s
![AH-64 Apache helicopters depart Forward Operating Base Fenty in Afghanistan's Nangarhar province, Oct. 3, 2013, AH-64 Apache helicopters depart Forward Operating Base Fenty in Afghanistan's Nangarhar province, Oct. 3, 2013,](https://media.defense.gov/2013/Oct/08/2001121952/-1/-1/0/072119-A-BHQ40-696.jpg)