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【判断题】
在长行程的杆端能承受的横向负载为(杆处于缩回状态)气缸验出最大力的1/20以下。
A.
正确
B.
错误
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【简答题】I have a friend who never exercises unless she’s training for a marathon.A. 1111MicrosoftInternetExplorer402DocumentNotSpecified7.8 磅Normal0我有一个朋友从来不锻炼,除非她去进行马拉松训练。B. 1111MicrosoftInternetExplorer402D...
【单选题】下列五个命题: (1)若直角三角形的两条边长为5和12,则第三边长是13; (2)如果a≥0,那么 ( a ) 2 =a (3)若点P(a,b)在第三象限,则点P(-a,-b+1)在第一象限; (4)对角线互相垂直且相等的四边形是正方形; (5)两边及第三边上的中线对应相等的两个三角形全等. 其中不正确命题的个数是(  )
A.
2个
B.
3个
C.
4个
D.
5个
【单选题】根据下列文章,请回答 16~20 题。 I have a friend who is a team leader of about 25 employees who are primarily women. She' s found a trick that works for her most of the time, but not always. Those staff who appear...
A.
We shall not be moved.
B.
Money means freedom.
C.
Photos taking are pleasant.
D.
There are people who are so careless about dressing.
E.
Action speaks louder than words.
F.
It is our society that must be blamed.
G.
You should wear appropriately where you are.
【单选题】以下程序的运行结果是( )。 #include int fac(int x) { int s; if (x==0) s=10; else s=x+fac(x-3); return s; } int main() { int n=9; printf("%d",fac(n)); return 0; }
A.
28
B.
29
C.
30
D.
31
【单选题】int fun( int n ) { int a; if( n==1 ) return 1; a = n + fun( n-1 ); return ( a ); } main() { printf( "%d\n", fun( 5 ) ); } 程序的输出结果是
A.
9
B.
10
C.
14
D.
15
【单选题】若等比数列{a n }的首项为1,前n项和为 40 27 ,公比为 1 3 ,则这个数列的项数为(  )
A.
4
B.
3
C.
5
D.
6
【简答题】阅读理解。 Tom: I have a friend who is from the UK. He smokes a lot every day. He'll be 40 this year and 4 years ago his doctor told him he wouldn't make it to 50. That's about when his daughter will gradu...
【简答题】已知等差数列{a n }为递增数列,满足 a 3 2 =5 a 1 +5 a 5 -25 ,在等比数列{b n }中,b 3 =a 2 +2,b 4 =a 3 +5,b 5 =a 4 +13. (Ⅰ)求数列{b n }的通项公式b n ; (Ⅱ)若数列{b n }的前n项和为S n ,求证:数列{ S n + 5 4 }是等比数列.
【简答题】若3,4,a和5,b,13是两组勾股数,则a+b的值是___________.
【简答题】输液治疗工作内容包括: A评估治疗方案 B评估患者情况 C选择穿刺部位 D静脉通路的护理和维持 E正确选择穿刺部位和工具
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