题干

在下列各组溶液中,离子一定能大量共存的是

A:加入KSCN溶液显红色的溶液:K+、NH4+、Cl、I

B:常温下,pH=1的溶液:Fe3+、Na+、NO3、SO42

C:滴入酚酞试液显红色的溶液:Mg2+、Al3+、Br、SO42

D:含0.1mol/LNH4Al(SO4)2·12H2O的溶液:K+、Ca2+、NO3、OH

上一题 下一题 0.0难度 选择题 更新时间:2015-10-26 06:30:10

答案(点此获取答案解析)

B

同类题4

阅读理解

    Become a Volunteer and Make a Difference

    The First Tee, as an outstanding youth development organization, is always searching for good people that want to volunteer at one of our many Pittsburgh area locations.

    We're Looking for You!

    Nationwide, we currently have more than 3,700 coaches signed up with The First Tee as well as volunteers. But you don't have to be a golf professional or even a good golfer. With The First Tee Coach Program, we provide the training you need.

    Developed with input from leading experts in the field of positive youth development, our program focuses on making participants stronger and more confident through decision-making and exploring options, inspiring the golfers of tomorrow to look to the future, set goals, and unlock their potential.

    We also need more volunteers to make The First Tee possible. Opportunities include:

    Assistant Coach: assist in our weekly golf clinics. All that we request is that you make a 7-week commitment (one day per week), for 2 hours each week. Each clinic is led by one of our trained staff members who creates a written lesson plan for our volunteers to follow.

    Database Manager: input data entry of participants, volunteers, and community relation records and update chapter information for Home Office and community relations. The database manager is expected to update the data a minimum of every other week.

    Equipment Manager: organize and sort donated equipment, get rid of unfit equipment, and arrange equipment for distribution to participants at least once a week.

    Greeter: register participants, hand information to parents, greet visitors, answer phone and provide general program information.

Process of Becoming a Volunteer

    Begin by filling out the Google Forms application below. Once Alison Boyle (our Director of Volunteer and Participant Services) receives your completed application, she will contact you for an in-person interview.

    CLICK HERE to fill out a Volunteer Application via Google Forms

    For more information, please contact our Director of Volunteer and Participant Services, Alison Boyle, at aboyle@the first teepittsburgh.org.

同类题5

阅读下面文言文,完成后面题。

    唐恪,钦叟,杭州钱塘人。四岁而孤,闻人言其父,辄悲泣。登进士第,为郴洲尉。县民有被害而尸不获,吏执其邻人,抑使自诬,令以为信。恪争之,令曰:“否将为君累。”恪曰:“吾为尉而盗不能捕,更俾亡辜死乎?”躬出访求,夕,若有告者,旦而得尸,遂获盗。知榆次,县豪子雄于乡,萃逋庇奸,不输公赋,前后莫敢诘。恪以理善晓之,悟而自悔,折节为长者。大观中,召为屯田员外郎,持节招纳夷人。夷始恫疑,衷甲以逆,恪尽去兵卫从数十卒,单行。夷望见欢呼,投兵听命。

    徙沧州。河决,水犯城下,恪乘城救理。都水孟昌龄移檄索船与兵恪报水势方恶船当以备缓急沧为极边兵非有旨不敢遣昌龄怒劾之恪不为动益治水水去城得全诏书嘉奖。

    靖康初,金兵入汴,李邦彦荐之,同知枢密院事,至则为中书侍郎。八月,进拜少宰兼中书侍郎,帝注礼之甚渥。然恪为相,无济时大略。金骑再来,邀割三镇,恪集廷臣议,以为当与者十九,恪从之。使者既行,于是诸道勤王兵大集,辄谕止令勿前,皆反旆而去。洎金兵薄城下,始悔之,密言于帝曰:“唐自天宝而后屡失而复兴者,以天子在外可以号召四方也。今宜举景德故事,留太子居守而西幸洛,连据秦、雍,领天下亲征,以图兴复。”帝将从其议,而开封尹何栗入见,引苏轼所论,谓周之失计,未有如东迁之甚者。帝幡然而改,以足顿地曰:“今当以死守社稷。”擢栗门下侍郎,恪计不用。

    从帝巡城,为都人遮击,策马得脱,遂卧家求去。御史胡舜陟继劾其罪,谓:“恪之智虑不能经画边事,但长于交结内侍,今国势日蹙,诚不可以备位。”乃以栗代为相。 (选自《宋史列传第一百一十一》)