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【多选题】
关于离散系统稳定性充要条件,说法正确的是。A.
所有闭环极点位于复平面左半平面。
B.
所有开环极点位于复平面左半平面。
C.
所有闭环极点位于复平面单位圆内。
D.
所有差分方程特征根位平面单位圆内。
E.
所有差分方程特征根实部小于-1。
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【简答题】Write brief notes on types of Genetic disorders:
【单选题】Which is NOT the characteristics of autosomal recessive genetic disorders
A.
NOT skipped generation.
B.
Every affected individual should have at least one affected parent.
C.
If a child is an affected, none of parent may have the disease
D.
Each child has a 50% chance of being affected if the parent are carriers.
【单选题】Genetic disorders specifically refer to ______
A.
Congenital diseases
B.
Familial diseases
C.
Diseases caused by abnormalities in genetic material
D.
Diseases caused by genetic changes occur only in germ cells
E.
Both of the congenital and familial diseases
【单选题】Which is NOT the characteristics of autosomal recessive genetic disorders
A.
An autosomal recessive phenotype, typically is seen only in the sibship of the proband
B.
Both sexes are equally likely to be affected
C.
Parents of an affected are obligate carriers, the recurrence risk for their child is 1/2
D.
The parents of the affected may in some cases be close relatives.
【单选题】Although genetic mutations in bacteria and viruses can lead to epidemics, some epidemics are caused by bacteria and viruses that have undergone no significant genetic change. In analyzing the latter, ...
A.
An outbreak of Lyme disease
B.
An outbreak of dengue hemorrhagic fever
C.
An epidemic of typhoid
D.
An epidemic of paralytic polio among infants
E.
An epidemic of paralytic polio among adolescents and adults
【单选题】The last paragraph suggests that______.
A.
genetic discrimination only concerns those who are predisposed to terrible disease
B.
the appeal of plaintiffs subjected to genetic discrimination will terminate favorably without exception
C.
judges and juries always bias in favor of people with whom they share similar experience
D.
it is believed from the genetics perspective that no one carries perfect gene
【多选题】The different types of genetic disorders include
A.
single gene inheritance
B.
multifactorial inheritance
C.
chromosome abnormalities
D.
mitochondrial inheritance
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