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【简答题】
我们要养成擤鼻涕正确方法,擤鼻涕时用力过大,就可能把鼻腔内的细菌挤到中耳引起 。
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皮皮学刷刷变学霸
举一反三
【单选题】若a>0,b>0,且函数f(x)=4x 3 -ax 2 -2bx在x=1处有极值,则a+b等于(  )
A.
2
B.
3
C.
6
D.
9
【单选题】若a=(6,-2),b=(1,x).且a〦b,则x的值为
A.
B.
3
C.
D.
-3
【简答题】Paraphrase the following questions. Number your answers please. 1 Now, at least, Europeans should stop believing that corporate wrong-doing is a US problem that cannot occur in the old continent. 2 In...
【判断题】Read the passage and decide whether the statements are true (T) or false(F) TRUE AND FAIR TRUE AND FAIR The collapse of companies such as Enron and WorldCom demonstrated the central role of accounting...
A.
正确
B.
错误
【单选题】定义A-B={x|x∈A,且x?B},若A={1,2,4,6,8,10},B={1,4,8},则A-B=(  )
A.
{4,8}
B.
{1,2,6,10}
C.
{1}
D.
{2,6,10}
【单选题】白居易在《与元九书》中提出的文学主张是( )
A.
文以载道
B.
发愤著书
C.
文章合为时而著,歌诗合为事而作
D.
不拘格套,独抒性灵
【单选题】若方程8x 2 +2kx+k-1=0的两个实数根是x 1 ,x 2 且满足x 1 2 +x 2 2 =1,则k的值为(  )
A.
-2或6
B.
-2
C.
6
D.
4
【单选题】Tasks related to tax management, cost accounting, financial accounting, and data processing are the responsibility of which corporate officer?
A.
Treasurer
B.
Controller
C.
Chief Operations Officer
D.
Chief executive Officer
【单选题】若x,y∈R,且2 x =18 y =6 xy ,则x+y为(  )
A.
0
B.
1
C.
1或2
D.
0或2
【单选题】若A(a 1 ,b 1 ),B(a 2 ,b 2 )是反比例函数y=- 6 x 图象上的两个点,且0<a 1 <a 2 ,则b 1 与b 2 的大小关系是(  )
A.
b 1 <b 2 
B.
b 1 =b 2 
C.
b 1 >b 2 
D.
大小不确定
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