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【判断题】
负数的补码就是原码逐位取反后的结果。
A.
正确
B.
错误
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参考答案：
举一反三
【单选题】The cells of the body have varied and essential roles. Skin cells protect the whole body; red blood cells carry oxygen; and bone cells build the skeleton. Cells multiply fast when a person is growing,...
A.
needs a lot of food
B.
produces cancerous cells
C.
has need for preventive medicine
D.
has reached a maintenance level
查看完整题目与答案
【单选题】The human body is incredibly __________. When you donate a pint of blood, you lose about 3.5 trillion red blood cells, but your body quickly replaces them.
A.
supple
B.
flexible
C.
strong
D.
resilient
查看完整题目与答案
【单选题】生物膜的主要化学成分是
A.
蛋白质和核酸
B.
蛋白质和糖类
C.
蛋白质和脂肪
D.
蛋白质和脂类
查看完整题目与答案
【单选题】When red blood cells of blood group A meet serum of blood group B, the red blood cells will ( )
A.
aggregation
B.
adhere
C.
overlap
D.
agglutinate
E.
clot
查看完整题目与答案
【判断题】石油、煤、天然气、地热、油页岩、氢等属于合能体能源。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Red blood cells are not easily broken when they flow through narrow capillaries and sinuses. The main reason is that
A.
The red blood cells are in the shape of a double concave disc
B.
higher viscosity in red blood cells
C.
Better elasticity of red blood cell membrane
D.
Slow blood flow here
查看完整题目与答案
【单选题】蛋白质是两性电解质，当其带负电荷时，溶液的pH值为( )
A.
酸性
B.
碱性
C.
pH=pI
D.
pHpI
查看完整题目与答案
【单选题】生物膜的主要化学成分是
A.
蛋白质和核酸类
B.
蛋白质和脂类
C.
蛋白质和糖类
D.
磷脂和多糖类
查看完整题目与答案
【简答题】Red blood cells are an exception since they have nonuclei___________.A. when mature B. when grown C. when produced D. when increased
查看完整题目与答案
【单选题】生物膜的主要化学成分是
A.
蛋白质和核酸
B.
蛋白质和糖类
C.
蛋白质和脂类
D.
. 糖类和脂类
查看完整题目与答案
相关题目：
【单选题】The cells of the body have varied and essential roles. Skin cells protect the whole body; red blood cells carry oxygen; and bone cells build the skeleton. Cells multiply fast when a person is growing,...
A.
needs a lot of food
B.
produces cancerous cells
C.
has need for preventive medicine
D.
has reached a maintenance level
查看完整题目与答案
【单选题】The human body is incredibly __________. When you donate a pint of blood, you lose about 3.5 trillion red blood cells, but your body quickly replaces them.
A.
supple
B.
flexible
C.
strong
D.
resilient
查看完整题目与答案
【单选题】生物膜的主要化学成分是
A.
蛋白质和核酸
B.
蛋白质和糖类
C.
蛋白质和脂肪
D.
蛋白质和脂类
查看完整题目与答案
【单选题】When red blood cells of blood group A meet serum of blood group B, the red blood cells will ( )
A.
aggregation
B.
adhere
C.
overlap
D.
agglutinate
E.
clot
查看完整题目与答案
【判断题】石油、煤、天然气、地热、油页岩、氢等属于合能体能源。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Red blood cells are not easily broken when they flow through narrow capillaries and sinuses. The main reason is that
A.
The red blood cells are in the shape of a double concave disc
B.
higher viscosity in red blood cells
C.
Better elasticity of red blood cell membrane
D.
Slow blood flow here
查看完整题目与答案
【单选题】蛋白质是两性电解质，当其带负电荷时，溶液的pH值为( )
A.
酸性
B.
碱性
C.
pH=pI
D.
pHpI
查看完整题目与答案
【单选题】生物膜的主要化学成分是
A.
蛋白质和核酸类
B.
蛋白质和脂类
C.
蛋白质和糖类
D.
磷脂和多糖类
查看完整题目与答案
【简答题】Red blood cells are an exception since they have nonuclei___________.A. when mature B. when grown C. when produced D. when increased
查看完整题目与答案
【单选题】生物膜的主要化学成分是
A.
蛋白质和核酸
B.
蛋白质和糖类
C.
蛋白质和脂类
D.
. 糖类和脂类
查看完整题目与答案
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