What is ducting (data center cooling)? Ducting is an approach to air management that uses a series of metal or plastic pipes to carry heated or cooled air from one place to another. A duct system is often referred to as ductwork. There are two categories of ducts: activ...
which is surrounded by upper and lower lips; the rear is communicated by the pharynx gorge and pharynx; the upper wall is palate; the lower wall is the bottom of the mouth; the two sides are called cheeks.
Your HVAC system is responsible for heating and cooling your home. Learn more about this critical home system in the sections below.
The lymphatic system is a collection of vessels and organs that function to transport a substance called lymph. Lymph is a fluid that contains various infection-fighting cells, such as white blood cells.Answer and Explanation: The thoracic duct is the main (and largest) vessel of the lymphatic...
Duct cleaning system.(what's New)
In the kidney, the collecting duct system is a series of tubules and ducts that connects the nephrons (the urine-producing structures of the kidney) to the renal pelvis. Although the nephron filters the blood and forms urine, the collecting ducts fine-tune the water and electrolyte balance of...
Main unit: An HVAC system's main unit may consist of the furnace, boiler, heat pump, or mini-split components. The main unit houses the controls for the HVAC system. Air handler: Except for boiler systems, an air handler is an indoor component that has the ability to forcefully move con...
while the left lobe is small and thin. The lower part of the liver faces the lower left, which is also called the visceral surface. There is a transverse fissure in the center of the visceral surface called the hepatic portal, which is the portal for hepatic duct, hepatic artery,a portal...
Other diseases of the biliary system also can be fatal, particularly those that affect the liver. Generally caused by alcoholism, cirrhosis involves scarring of liver tissue that progressively affects the organ's function. Given the number of important actions that the liver performs, the impact ...
A. To recommend(推荐) a series of books.B. To introduce a guest speaker.C. To invite a writer to a party. 相关知识点: 试题来源: 解析 B 问题是询问引言(introduction)的主要目的。首先分析选项:A.推荐书籍通常是书评或推荐列表的目的,与引言功能不符;B.介绍嘉宾符合引言常见用途,如在活动或演讲前...