user-avatar
khaiangel32
2 năm trước
tại sao hiện tượng song song ngược chiều của hệ thống mao mạch lại tăng hiệu quả hô hấp ở chim và cá vậy ạ
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

An earthquake is the result of a sudden release of energy in the Earth's crust that creates seismic waves. At the Earth's surface, earthquakes are recognized (25) _______ vibration, shaking and sometimes displacement of the ground. The vibrations may vary in (26) _______. They are caused mostly by slippage within geological faults, but also by other events such as volcanic activity, landslides, mine blasts, and nuclear tests. The underground point of (27) _____ of the earthquake is called the focus. The point directly above the focus on the surface is called the epicenter. Earthquakes by themselves rarely kill people or wildlife. It is usually the secondary events (28) _______ they trigger, such as building collapse, fires, tsunamis (seismic sea waves) and volcanoes, that are actually the human disaster. Many of these could possibly be avoided by better construction, safety systems, early warning and (29) _______ planning. 25. A. in B. with C. as D. from 26. A. Magnitude B. value C. amount D. quantity 27. A. source B. origin C. center D.epicenter 28. A. who B. what C. that D. those 29. A.evacuator B.evacuate C.evacuating D.evacuation CHỌN ĐÁP ÁN ĐÚNG VÀ GIẢI THÍCH , PLEASE ( MK CẦN GIẢI THÍCH CHI TIẾT CHÚT NHÉ )

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team