皮皮学，免费搜题
登录
搜题
【多选题】
What is the composition of human blood?A.
The average adult human has 5 to 6 L of blood.
B.
Almost half of this volume is occupied by three types of blood cells: erythrocytes (red cells), filled with hemoglobin and specialized for carrying O 2 and CO 2 ; much smaller numbers of leukocytes (white cells) of several types (including lymphocytes, also found in lymphatic tissue), which are central to the immune system to defend against infections; and platelets (cell fragments), which help to mediate blood clotting.
C.
The liquid portion is the blood plasma, which is 90% water and 10% solutes. Dissolved or suspended in the plasma are many proteins, lipoproteins, nutrients, metabolites, waste products, inorganic ions, and hormones.
D.
More than 70% of the plasma solids are plasma proteins, primarily immunoglobulins (circulating antibodies), serum albumin, apolipoproteins (for lipid transport), transferrin (for iron transport), and blood-clotting proteins such as fibrinogen and prothrombin.
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【判断题】Input pins on PALs are buffered to allow both polarities of the input signal to be available to the array.
A.
正确
B.
错误
【简答题】六个基本视图之间,仍然保持着与三视图相同的投影规律,即:________________长对正,________________高平齐,________________宽相等。
【简答题】PINs
【单选题】在进行原理图设计 ERC 编译时,系统提示“Floating Input Pins On Net NetU1_12”信息表示( )
A.
器件U1的第12脚没有连接输入信号
B.
器件U1含有悬浮的输入引脚 NetU1_12
【简答题】句型转换。 1. Their pen pals are from Singapore. (改为同义句) Their pen pals __________ __________ Singapore. 2. His aunt can speak English and French . (对划线部分提问) __________ __________ can his aunt speak? 3. Th...
【判断题】When a PAL is programmed, small fuses are blown open to allow connections between the input pins and the AND array.
A.
正确
B.
错误
【单选题】The diameters of both pins A and B are d, then the larger shearing stress for the two pins is .
A.
4bF/( a π d 2 )
B.
4( a + b )F/( a π d 2 )
C.
4( a + b )F/( b π d 2 )
D.
4 a F/( b π d 2 )
相关题目：