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1We believe an offence was committed______EU regulations.A.withB.overC.underD.on
We believe an offence was committed______EU regulations.
A.with
B.over
C.under
D.on
请帮忙给出正确答案和分析,谢谢!
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2题目是关于数列的各项均为正数的数列{an}中,s1>1且6sn=(an+1)(an+2),求an?(
题目是关于数列的各项均为正数的数列{an}中,s1>1且6sn=(an+1)(an+2),求an?(注:(an+1)(an+2)中的加号并不是角标而且加在an的后面!)
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3We feel sorry for being unable to entertain your request for offering a free car. The unde
We feel sorry for being unable to entertain your request for offering a free car. The underlined part means
A.surprise
B.contest
C.meet
D.gain
请帮忙给出正确答案和分析,谢谢!
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42B=A+C b^2=ac,则B-A=
2B=A+C b^2=ac,则B-A=
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5解三角形的题(要有过程!)已知锐角三角形ABC中,角A B C的对边分别为a b c且tanB=根号
解三角形的题(要有过程!)已知锐角三角形ABC中,角A B C的对边分别为a b c且tanB=根号3倍ac比上a^2+c^2-b^21)求角B2)求函数f(x)=sinx+2sinBcosx在x属于0到二分之派(闭区间)上的最大值
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6Priority should be given to peoples livelihood and their tangible benefits. The underlined
Priority should be given to peoples livelihood and their tangible benefits. The underlined part means______.
A.precedence
B.suggestions
C.attempts
D.costs
请帮忙给出正确答案和分析,谢谢!
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7△ABC中,ABC所对的边分别为a,b,c,已知a=3,cosA=√6/3,B=A+π/2,①求b的
△ABC中,ABC所对的边分别为a,b,c,已知a=3,cosA=√6/3,B=A+π/2,①求b的值②求△ABC的面积△ABC中,B=2A,a=1,b=√3,求c边△ABC的内角A,B,C的对边分别为a,b,c,已知b=2,B=π/6,c=π/4,求△ABC的面积
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8以下说法正确的是A、HBV不同亚型之间没有交叉免疫,免疫后各亚型之间不能交叉保护B、我国乙肝发病率
以下说法正确的是
A、HBV不同亚型之间没有交叉免疫,免疫后各亚型之间不能交叉保护
B、我国乙肝发病率在30~39岁有一高峰,因此,我国HBV感染者以成年为主
C、乙肝发病率有周期性起伏现象和明显的季节高峰
D、乙肝患者、HBsAg和HBeAg携带者均呈明显的家庭聚集性现象
E、乙肝主要通过粪-口途径传播
请帮忙给出正确答案和分析,谢谢!
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9某船在海上航行中不幸遇险,并发出求救信号,我海上救生艇在A处获悉后,立即测出该船的方位角为45度,与
某船在海上航行中不幸遇险,并发出求救信号,我海上救生艇在A处获悉后,立即测出该船的方位角为45度,与之相距10nmail的C处,还测得该船正沿方位角105度的方向以每小时9nmail的速度向一个小岛靠近,我海上救生艇立即以每小时21nmail的速度前往营救,求出海上救生艇的航向及与呼救船相遇所需要的时间
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10The function of the sentence "A nice day, isnt it?" is______.A.informativeB.phaticC.direct
The function of the sentence "A nice day, isnt it?" is______.
A.informative
B.phatic
C.directive
D.performative
请帮忙给出正确答案和分析,谢谢!
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