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【单选题】
引入管穿越承基础时,管径50∽100预留洞的尺寸是()。
A.
200*200
B.
300*300
C.
400*400
D.
500*500
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【单选题】已知函数f(x)= x 2 +a x+1 在x=1处取极值,则a等于(  )
A.
5
B.
4
C.
3
D.
2
【单选题】已知函数f(x)=ax 3 +bsin x+4(a,b∈R),f(lg(log 2 10))=5,则f(lg(lg 2))等于  (  ).
A.
-5
B.
-1
C.
3
D.
4
【单选题】已知函数f(x)由下表定义: x -2 2 1 3 4 f(x) 0 1 3 4 5 记f(x)的反函数为 ,则 =
A.
3
B.
5
C.
?2
D.
1
【单选题】已知函数 y= x m 2 -5m+4 (m∈Z)为偶函数且在区间(0,+∞)上单调递减,则m=(  )
A.
2或3
B.
3
C.
2
D.
1
【单选题】下面查看视图的基本信息的语句中,正确的是
A.
SHOW TABLE STATUS LIKE '视图名'
B.
SHOW TABLE STATUS = '视图名'
C.
DESCRIBE 视图名
D.
SHOW VIEW STATUS LIKE '视图名'
【多选题】Ethical issues with prenatal genetic tests include:
A.
How to ensure that information about testing options is given in a non-directive, culturally appropriate, & supportive way?
B.
Parents need to make informed decisions about screening, diagnosis, & any actions to be taken as a result.
C.
Are the risks of prenatal diagnosis through methods such as amniocentesis worth the potential benefit?
D.
Questions about the intrinsic value of people with disabilities in society, & questions about whether it is appropriate to use eugenics-like solutions that reduce the number of babies born with disabilities.
【单选题】已知函数y=f(x)由下列对应关系决定: x -3 -2 -1 0 1 2 3 f(x) 5 4 3 0 -3 -4 -5 则函数y=f(x)是(  )
A.
奇函数
B.
偶函数
C.
既是奇函数又是偶函数
D.
既不是奇函数又不是偶函数
【简答题】M1432A 万能外圆磨床上能实现无心外圆磨削吗?为什么?
【单选题】下面查看视图的基本信息的语句中,正确的是
A.
SHOW TABLE STATUS LIKE '视图名'
B.
SHOW TABLE STATUS = '视图名'
C.
SHOW VIEW STATUS = '视图名'
D.
SHOW VIEW STATUS LIKE '视图名'
【单选题】已知函数f(x)= x 2 +1 (x≥0) -2x (x<0) ,则f(f(-1))=(  )
A.
2
B.
3
C.
4
D.
5
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