热点试题

[ 数学 ] 某公司需在一个月(31天)内完成新建办公楼的装修工程,如果由甲、乙两个工程队合做,12天可

某公司需在一个月(31天)内完成新建办公楼的装修工程,如果由甲、乙两个工程队合做,12天可完成;如果由甲、乙两队单独做,甲队比乙队少用10天完成.
(1)求甲、乙两工程队单独完成此项工程所需的天数;
(2)如果请甲工程队施工,公司每日需付费用2000元;如果请乙队施工,公司每日需付费用1400元,在规定时间内:A.请甲队单独完成此项工程;B.请乙队单独完成此项工程;C.请甲、乙两队合作完成此项工程,以上三种方案哪一种花钱最少?

2016-05-18 | 0

[ 数学 ] 12+3+27-613+18×32.

1
2+
3
+
27
-6
1
3
+
1
8
×
32

2016-05-18 | 0

[ 数学 ] 命题p:“不等式xx-1≥0的解集为{x|x≤0或x≥1}”;命题q:“不等式x2>4的解

命题p:“不等式
x
x-1
≥0
的解集为{x|x≤0或x≥1}”;命题q:“不等式x2>4的解集为{x|x>2}”,则(  )
A.p真q假B.p假q真
C.命题“p且q”为真D.命题“p或q”为假

2016-05-22 | 0

[ 数学 ] A是平面BCD外一点,E,F,G分别是BD,DC,CA的中点,设过这三点的平面为α,则在直

A是平面BCD外一点,E,F,G分别是BD,DC,CA的中点,设过这三点的平面为α,则在直线AB,AC,AD,BC,BD,DC中,与平面α平行的直线有(  )
A.0 B.1条 C.2条 D.3条

2016-05-25 | 0

[ 语文 ] 下列词语中,字形与划线字的读音全都正确的一组是 [     ] A.装帧 原形毕露 埋(m

下列词语中,字形与划线字的读音全都正确的一组是[    ]
A.装帧 原形毕露 (mái)怨 大腹便(pián)便
B.更迭 返躬自问 (gǔ) (jiǎo)枉过正
C.精粹 家长里短 (dìng)正 (xián)三尺
D.粉沫 旁征博引 (dài)捕 飞来(hèng)祸

2016-05-26 | 0

[ 语文 ] 根据提示,默写下面古今诗文。(每空一分,共8分)小题1:老骥伏枥,____________

根据提示,默写下面古今诗文。(每空一分,共8分)
小题1:老骥伏枥,__________________________。(曹操《龟虽寿》)
小题2:____________________,隔江犹唱后庭花。(杜牧《泊秦淮》)
小题3:无可奈何花落去,              。 (晏殊《浣溪沙》)
小题4:问渠那得清如许?              。(《观书有感》朱熹)  
小题5:《次北固山下》一诗中揭示新旧更替生活哲理的名句是:              
小题6:《论语》中,人们经常用来表现一个人不畏艰难险阻、在困境中坚强不屈的句子是               。                              

2016-05-26 | 0

[ 语文 ] 阅读古诗《石灰吟》,回答问题。                      千锤万凿出深山,

阅读古诗《石灰吟》,回答问题。
                     千锤万凿出深山,烈火焚烧若等闲。                     
粉骨碎身浑不怕,要留清白在人间。
1.这首诗的作者是______朝诗人______。“吟”是_________________的意思。
2.解释下列词语。
等闲:_________________        
浑:_________________  
清白:_________________
3.诗的前两句看似写石灰的烧炼,其实象征着_________________;三、四两句描写了_________________的精神,表达了诗人_________________的决心。
4.在括号内填上适当的关联词语将句子衔接起来。    
(      )千锤万凿,(     )烈火焚身,(      )粉骨碎身,我(      )要留清白在人间。

2016-05-27 | 0

[ 语文 ] 依次填入下列各句横线处的词语,最恰当的一项是①某网站的调查结果显示,有三成民众相信会出现“

依次填入下列各句横线处的词语,最恰当的一项是
①某网站的调查结果显示,有三成民众相信会出现“世界末日”,这表明人类对宇宙的认识还很_____________。
②中国是诗的国度,那些千古_____________的诗章作为民族文化的精髓,涵养了一代又一代中国人的心灵。
③两汉以来,很多人在引用《论语》时“断章取义”,不惜_____________《论语》,用自己的学说附会它。
A.肤浅传诵曲解B.浮浅传诵误解
C.肤浅传颂误解D.浮浅传颂曲解

2016-05-27 | 0

[ 英语 ] Believe it or not, cell phones have been arou

Believe it or not, cell phones have been around for over a quarter of a century.The first commercial cell phone system was developed by the Japanese in 1979. But cell phones have changed a lot since that time. The early cell phones appeared big and heavy but they have developed into small and light palm­sized models. There have been huge developments in their functions,too. We have had call forwarding, text messaging, answering services and hands­free use for years, but now the manufacturers equip countless new facilities, such as instant access to the Internet and receiving and Sending photos.
Cell phones have become very common in our lives;recent statistics suggest as many as one in three people on the planet now has a cell phone, and most of them say they couldn't live without one. Cell phones are used in every area of our lives and have become a necessary tool, used for essential arrangements, social contact and business. They have made it easier to call for help on the highway. They have made it possible to keep in touch with people “on the move” when people are traveling.
Cell phones have made communication easier and have reduced the need for family arguments. We can use cell phones to let our family know we'll be late or if there's a change of plan or an emergency. Cell phones have eased the worries of millions of parents when their teenagers are out late, and they can now contact their children at any time.
This does not mean that cell phones are all good news. They have brought with them a number of new headaches for their owners: it costs a lot to replace stolen phones, something that is becoming a frequent occurrence, and have you ever seen such huge phone bills? More serious, however, is the potential health problem they bring: there are fears that radiation from the phones may cause brain tumor(肿瘤). This may be a time bomb waiting to happen to younger people who have grown up with cell phones that they simply can't live without.

2016-05-27 | 0

[ 英语 ] May is _______ month of the year. A. five B.

May is _______ month of the year.

A. five
B. the fiveth
C. fifth
D. the fifth

2016-05-28 | 0