div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imageimg data-url=documenta-to-bring-oxygen-for-breathing-b-so-that-sunlight-may-enter-the-room-chtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: wbcsgurucomwbcsgurucompdfWBCSPrelimsPaperpdf · A to bring oxygen for breathing B so that sunlight may enter the room C to maintain convectional currents keep the air loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader034fdocumentsinreader034viewer20220421015e7e003d76fb0c2c33750589html5thumbnails1jpg width=140 height=200 divdivdiv class=trans-pagebutton class=gotoPage data-page=2Page 2button div class=trans-imageimg data-url=documenta-to-bring-oxygen-for-breathing-b-so-that-sunlight-may-enter-the-room-chtmlpage=2 data-page=2 class=trans-thumb lazyload alt=Page 2: wbcsgurucomwbcsgurucompdfWBCSPrelimsPaperpdf · A to bring oxygen for breathing B so that sunlight may enter the room C to maintain convectional currents keep the air loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader034fdocumentsinreader034viewer20220421015e7e003d76fb0c2c33750589html5thumbnails2jpg width=140 height=200 divdivdiv class=trans-pagebutton class=gotoPage data-page=3Page 3button div class=trans-imageimg data-url=documenta-to-bring-oxygen-for-breathing-b-so-that-sunlight-may-enter-the-room-chtmlpage=3 data-page=3 class=trans-thumb lazyload alt=Page 3: wbcsgurucomwbcsgurucompdfWBCSPrelimsPaperpdf · A to bring oxygen for breathing B so that sunlight may enter the room C to maintain convectional currents keep the air loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader034fdocumentsinreader034viewer20220421015e7e003d76fb0c2c33750589html5thumbnails3jpg width=140...