Ở Trong Thư Viện, Không Được Làm Ồn

<img alt=30-1 src="https://static./chapter-image/o-trong-thu-vien-khong-duoc-lam-on/30-1. png" data-pagespeed-url-hash=3190372525 onload="pagespeed. CriticalImages. checkImageForCriticality(this);"/><img alt=30-2 src="https://static./chapter-image/o-trong-thu-vien-khong-duoc-lam-on/30-2. png" data-pagespeed-url-hash=3484872446 onload="pagespeed. CriticalImages. checkImageForCriticality(this);"/><img alt=30-3 src="https://static./chapter-image/o-trong-thu-vien-khong-duoc-lam-on/30-3. png" data-pagespeed-url-hash=3779372367 onload="pagespeed. CriticalImages. checkImageForCriticality(this);"/><img alt=30-4 src="https://static./chapter-image/o-trong-thu-vien-khong-duoc-lam-on/30-4. png" data-pagespeed-url-hash=4073872288 onload="pagespeed. CriticalImages. checkImageForCriticality(this);"/><img alt=30-5 src="https://static./chapter-image/o-trong-thu-vien-khong-duoc-lam-on/30-5. png" data-pagespeed-url-hash=73404913 onload="pagespeed. CriticalImages. checkImageForCriticality(this);"/>