叶绿素a、b在波长652nm处的比吸收系数是()。

题型:填空题

问题:

叶绿素a、b在波长652nm处的比吸收系数是()。

考点:农学植物的光合作用植物的光合作用题库
题型:填空题
When I was about 12 years old, I really wanted a new bike! I __36__ my parents my birthday wish,but I knew there was little hope because my family could __37__ have that money.
On my birthday my parents told me they had my __38__ outside in the back yard. At once I __39__ out to the yard. There was my bike, __40__ it wasn’t the bike that I thought it would be. This one was pink, old and worn with age. It was so __41__! I thought I __42__ my parents’ feelings because I could see the disappointment __43__ their faces and I was sure they could see it on mine. I __44__ the old bike and rode it, feeling __45__ that I had made my parents feel this way. So I put on a smile, rode as fast as I could and didn’t __46__.
As time went by, I began to understand my parents gave me __47__ much more than just a rusty(生锈的)old bike. They gave me a life lesson about __48__. When you give something out of love, it doesn’t matter what it is in fact. What matters is the love that is in it. I like to remember this __49__ because giving a gift is not about money. It’s about how much love you can feel from it. Do remember, a gift that __50__ two dollars isn’t any less valuable(有价值的)than one that costs one hundred dollars, or even more.
小题1:
A.talkedB.spokeC.saidD.told
小题2:
A.hardlyB.quicklyC.slowlyD.easily
小题3:
A.guitarB.giftC.cakeD.card
小题4:
A.rushedB.rodeC.climbedD.came
小题5:
A.andB.orC.butD.because
小题6:
A.excitingB.interestingC.relaxingD.disappointing
小题7:
A.likedB.hatedC.hurtD.thanked
小题8:
A.onB.inC.atD.for
小题9:
A.got inB.got onC.got offD.got up
小题10:
A.surprisedB.excitedC.happyD.bad
小题11:
A.look ahead B.look backC.come upD.come down
小题12:
A.anythingB.nothingC.somethingD.everything
小题13:
A.loveB.moneyC.friendship D.knowledge
小题14:
A.ideaB.newsC.adviceD.story
小题15:
A.spendsB.costsC.paysD.offers
题型:填空题

一个可能的收益率值所占的概率越大,那么()。

A.它对收益期望的影响越小

B.它对收益期望的影响越大

C.它对方差的影响越小

D.它对方差的影响越大

题型:填空题

电影院、剧场、文化娱乐中心等人员密集建筑的基地,在执行当地规划部门的条例和有关专项建筑设计规范时,应同时满足( )。

A.基地应至少三面直接临接城市道路,其沿城市道路的长度至少不大于基地周长的1/6
B.建筑物主要出入口前应有供人流、车流集散用的空地,其面积和长宽尺寸应根据使用性质和人数确定
C.绿化面积和停车场面积符合建筑基地的需要即可
D.基地或建筑物的主要出入口,应尽量直对城市主要干道的交叉口

题型:填空题

使用环磷酰胺对小鼠染毒,经处死动物、收集骨髓细胞、低渗、固定、Giemsa染色等步骤,光镜下可观察到的染色体畸变类型为

A.着丝点环
B.相互易位
C.倒位
D.插入
E.重复

题型:填空题

小儿生长发育最快的时期为()。

A.出生后头6个月

B.婴儿期

C.幼儿期

D.学龄前期

E.学龄期

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