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【单选题】
对于这样几个网段:172.128.12.0,172.128.17.0,172.128.18.0,172.128.19.0,最好用下列哪些网段实现路由汇总?
A.
172.128.0.0/21
B.
172.128.17.0/21
C.
172.128.12.0/22
D.
172.128.20.0/20
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参考答案：
举一反三
【简答题】设置文件student.dat具有的只读属性的DOS命令是(    )。 A) ATTRIB+H student.dat    B) ATTRIB+A student.dat C) ATTRIB+S student.dat    D) ATTRIB+R student.dat
查看完整题目与答案
【判断题】类似种子的果实由胚珠发育而成。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Which immune-system cells are responsible for producing antibodies?
A.
macrophages
B.
B cells
C.
helper T cells
D.
cytotoxic T cells
E.
erythrocytes
查看完整题目与答案
【单选题】根据下面定义的数据段： DESG SEGMENT DAT1 DB ‘1234’ DAT2 DW 5678HADDR EQU DAT2-DAT1 DESG ENDS 执行指令 MOV AX ADDR后，AX寄存器中的内容是( )
A.
5678H
B.
7856H
C.
4444H
D.
0004H
查看完整题目与答案
【单选题】The pig's immune system is made up of , cells and molecules.
A.
organs
B.
tissue
C.
cytokines
D.
complemen
查看完整题目与答案
【单选题】Components of innate immune system
A.
tissue barriers 、 innate immune cells 、 innate immune molecules
B.
central immune organs
C.
peripheral immune organs
D.
immune cells
E.
primary lymphoid organs
查看完整题目与答案
【单选题】Immune system cells use damaging proteases and reactive oxygen species to destroy foreign invaders. The immune system cells are not harmed because the microbes(微生物) are sequestered(隔离) in vesicles(囊泡)...
A.
Active transport
B.
Phagocytosis
C.
Exocytosis
D.
Pinocytosis
查看完整题目与答案
【单选题】what is the ability of the immune system to recognize mutated cells ?
A.
immune defense
B.
immune homeostasis
C.
immune supervision
D.
immune tolerance
查看完整题目与答案
【单选题】根据下面定义的数据段： DSEG SEGMENT DAT1 DB '1234' DAT2 DW 5678H ADDR EQU DAT2-DAT1 DSEG ENDS 执行指令MOV AX,ADDR后，AX寄存器中的内容是
A.
5678H
B.
7856H
C.
4444H
D.
0004H
查看完整题目与答案
【判断题】Cytokines are polypeptides secreted by immune and other cells that carry signals to neighbouring cells to regulate the immune system. _____
A.
正确
B.
错误
查看完整题目与答案
相关题目：
【简答题】设置文件student.dat具有的只读属性的DOS命令是(    )。 A) ATTRIB+H student.dat    B) ATTRIB+A student.dat C) ATTRIB+S student.dat    D) ATTRIB+R student.dat
查看完整题目与答案
【判断题】类似种子的果实由胚珠发育而成。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Which immune-system cells are responsible for producing antibodies?
A.
macrophages
B.
B cells
C.
helper T cells
D.
cytotoxic T cells
E.
erythrocytes
查看完整题目与答案
【单选题】根据下面定义的数据段： DESG SEGMENT DAT1 DB ‘1234’ DAT2 DW 5678HADDR EQU DAT2-DAT1 DESG ENDS 执行指令 MOV AX ADDR后，AX寄存器中的内容是( )
A.
5678H
B.
7856H
C.
4444H
D.
0004H
查看完整题目与答案
【单选题】The pig's immune system is made up of , cells and molecules.
A.
organs
B.
tissue
C.
cytokines
D.
complemen
查看完整题目与答案
【单选题】Components of innate immune system
A.
tissue barriers 、 innate immune cells 、 innate immune molecules
B.
central immune organs
C.
peripheral immune organs
D.
immune cells
E.
primary lymphoid organs
查看完整题目与答案
【单选题】Immune system cells use damaging proteases and reactive oxygen species to destroy foreign invaders. The immune system cells are not harmed because the microbes(微生物) are sequestered(隔离) in vesicles(囊泡)...
A.
Active transport
B.
Phagocytosis
C.
Exocytosis
D.
Pinocytosis
查看完整题目与答案
【单选题】what is the ability of the immune system to recognize mutated cells ?
A.
immune defense
B.
immune homeostasis
C.
immune supervision
D.
immune tolerance
查看完整题目与答案
【单选题】根据下面定义的数据段： DSEG SEGMENT DAT1 DB '1234' DAT2 DW 5678H ADDR EQU DAT2-DAT1 DSEG ENDS 执行指令MOV AX,ADDR后，AX寄存器中的内容是
A.
5678H
B.
7856H
C.
4444H
D.
0004H
查看完整题目与答案
【判断题】Cytokines are polypeptides secreted by immune and other cells that carry signals to neighbouring cells to regulate the immune system. _____
A.
正确
B.
错误
查看完整题目与答案
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