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【简答题】
Fill in the blanks by selecting suitable words from the word bank. You may not use any of the words more than once. A. abundant F. distress K. curious B. superficial G. presently L. obliged C. tedious H. efficiently M. destinations D. absorbed I. adjusted N. evidently E. functions J. beneficial O.bulk The Internet has made English learning much easier. English learners used to be (1)___ to spend their time in libraries looking for the books that would help them in their language studies. It was very inconvenient because a lot of materials could only be found in (2)____and uninteresting textbooks and readers. But today authentic content on a variety of subjects is only a click away. This is especially (3)____ for those who wants to learn English earnestly. In order to achieve fluency in English, you need to be comfortable using at least 10,000 words. The (4)___materials on the Internet make it possible for you to choose appropriate content to read and listen to. These materials can be (5)___ to your level if you input some key words in the search engine. But how can you remember the (6)___ of unfamiliar words? In this case, the Internet (7)___ makes it easier to learn vocabulary. You can use online dictionary. You can use online dictionaries to instantly find out their grammatical (8)___ and the specific meaning of these words. The Internet helps you to (9)___ accumulate vocabulary based on lively and interesting language content, which greatly reduces your (10)____ caused by inability to remember the new words. The efficiency of this vocabulary learning is one of the reasons why the Internet has become an ideal place to learn English.
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【简答题】在平面直角坐标系xOy中,已知圆心在第二象限,半径为2 2 的圆C与直线y=x相切于坐标原点O.椭圆 x 2 a 2 + y 2 9 =1与圆C的一个交点到椭圆两焦点的距离之和为10. (1)求圆C的方程; (2)试探求C上是否存在异于原点的点Q,使Q到椭圆右焦点F的距离等于线段OF的长.若存在,请求出点Q的坐标;若不存在,请说明理由.
【判断题】电磁型过电流继电器内电流线圈分成两部分,当由串联改为并联时,动作电流减少1/2。
A.
正确
B.
错误
【单选题】公开招标的优点是( )
A.
竞争激烈
B.
招标组织工作较容易
C.
节省时间
D.
保密性好
【简答题】已知半径为1的动圆与定圆(x-5) 2 +(y+6) 2 =9相切,则动圆圆心的轨迹方程是(  ) A.(x-5) 2 +(y+6) 2 =16 B.(x-5) 2 +(y-6) 2 =16或(x-5) 2 +(y-6) 2 =4 C.(x-5) 2 +(y+6) 2 =4 D.(x-5) 2 +(y+6) 2 =16或(x-5) 2 +(y+6) 2 =4
【多选题】公开招标的优点有( )。
A.
投标竞争激烈
B.
节约招标费用和节省时间
C.
招标人可以在较广的范围内选择中标人
D.
所需招标时间长、费用高
E.
有利于将工程项目的建设交予可靠的中标人实施并取得有竞争性的报价
【判断题】蒲某为出风头多次在网络上发布信息,谎称已在某航班上放置炸弹,他因涉嫌编造虚假恐怖信息罪被批捕。该案例警示我们要远离网络。A. 对 B. 错
A.
正确
B.
错误
【判断题】访问调查法不能通过口头交谈方式反复询问某些社会情况,并深入探讨有关的社会问题。
A.
正确
B.
错误
【单选题】与邀请招标相比,公开招标的优点
A.
节省招标费用
B.
招标时间短
C.
减小合同过程中,承包不履约的风险
D.
可以充分的竞争
【单选题】对工程项目招标人而言,与邀请招标相比,公开招标的优点是 ( )
A.
评标的工作量大
B.
选择中标人的范围广
C.
评标时间长
D.
招标费用高
【简答题】已知在平面直角坐标系xOy中,圆心在第二象限、半径为2 2 的圆C与直线y=x相切于坐标原点O.椭圆 x 2 a 2 + y 2 9 =1与圆C的一个交点到椭圆两焦点的距离之和为10. (1)求圆C的方程; (2)试探究圆C上是否存在异于原点的点Q,使A到椭圆右焦点F的距离等于线段OF的长,若存在,请求出点Q的坐标;若不存在,请说明理由.
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