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【单选题】
多项式 计算x=1.4和x=1.6时多项式的值,下列方法 正确 的是 ( )A.
P=[1,8,-2,0,-10],x=[1.4,1.6],y=polyval(P,x) ；
B.
P=[1,8,-2,0,-10],x=[1.4,1.6],y=polyvalm(P,x) ；
C.
P=[-10,0,-2,8,1],x=[1.4,1.6],y=polyval(P,x) ；
D.
P=[-10,0,-2,8,1],x=[1.4,1.6],y=polyvalm(P,x) ；
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【单选题】Dangerous bacteria can contaminate .
A.
organic food only
B.
non-organic food only
C.
organic and non-organic food
【单选题】Experts say that in the average home, the kitchen is the area with most dangerous bacteria.
A.
The kitchen is the cleanest room in the house.
B.
Kitchens often contain things that can make you sick.
C.
The kitchen is a dangerous place.
【单选题】设int a=9,b=8,c=7,x=1; 则执行语句 if(a>7)if(b>8)if(c>9)x=2;else x=3; 后,x的值是 。
A.
0
B.
2
C.
1
D.
3
【单选题】设int a = 9,b = 8,c = 7, x = 1;则执行语句后x的值是: if (a>7) if (b>8) if (c>9) x=2 ; else x = 3 ;
A.
0
B.
2
C.
1
D.
3
【简答题】实训题:
【单选题】设int a=9,b=8,c=7,x=1;则执行语句if(a>7)if(b>8)if(c>9)x=2;else x=3;后x的值的是
A.
0
B.
2
C.
1
D.
3
【单选题】Synthetic biology provides technical support for reviving and constructing from scratch dangerous bacteria or viruses such as Ebola, Smallpox and SARS viruses that can kill people in mass easily; this...
A.
biosecurity
B.
biosafety
C.
biorisk
D.
bioproduct
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