下列各组物质,不管它们以何种比例混合,只要物质的量一定,则完全燃烧时,消耗氧气为一恒定量的是( )
A <img src="https://www.beizhujiaoyu.com/uploads/202208/20130110131941604160.jpg" alt="" border="0" /> B <img src="https://www.beizhujiaoyu.com/uploads/202208/20130110131924332433.jpg" alt="" border="0" /> C <img src="https://www.beizhujiaoyu.com/uploads/202208/20130110131967986798.jpg" alt="" border="0" /> D <img src="https://www.beizhujiaoyu.com/uploads/202208/20130110131949254925.jpg" alt="" border="0" />