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【单选题】
精密称取0.2036 g的基准物质Na 2 CO 3 ，溶解后，以甲基橙为指示剂，用HCl标准溶液滴定至终点，用去36.06 mL反应式为： 2HCl+Na 2 CO 3 =2NaCl+2CO 2 +H 2 O 计算HCl的浓度C HCl 选用公式 计算，公式中 是：A.
0.2036
B.
106.0
C.
1
D.
2
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【单选题】根据资料(1)至(5)，下列各项中，当月编制的利润表“营业收入，，项 目应填列金额是( )元。
A.
730 000
B.
740 000
C.
560 000
D.
680 000
【多选题】市场营销学的营销观念经历了6个发展阶段，其中产生于卖方市场条件下的营销观念有()。
A.
生产观念
B.
产品观念
C.
推销观念
D.
市场营销观念
E.
社会市场营销观念
【单选题】如果企业本年营业收入增长快于营业成本的增长，那么企业本年营业利润( )。
A.
一定大于零
B.
一定大于上年营业利润
C.
一定大于上年利润总额
D.
不一定大于上年营业利润
【单选题】下列会计差错中,影响营业利润这一项目金额的是()。
A.
将公允价值变动损益错登为“投资收益
B.
将营业外支出错登为“其他业务成本”
C.
将定额内损耗的存货盘亏错登为“销售费用”
D.
将出售原材料的成本错登为“主营业务成本”
【单选题】下列会计差错中 , 影响“营业利润 " 这一项目金额的是 ( ) 。
A.
将公允价值变动损益错登为 “投资收益”
B.
将营业外支出错登为 “其他业务成本”
C.
将定额内损耗的存贷盘亏错登为 " 销售费用 ”
D.
将出售原材料的成本错登为 “主营业务成本 "
【单选题】In an argumentative essay, you have to make some claims, especially those of fact, cause or effect, value, and policy. Which type does the following statement belong to?Does the use of cell phones in ...
A.
fact
B.
cause or effect
C.
value
D.
policy
【多选题】How does the cell determine which parts of the RNA transcript to remove during RNA splicing?
A.
Unlike the coding sequence of an exon, most of the nucleotide sequence of an intron is unimportant. Although there is little overall resemblance between the nucleotide sequences of different introns, each intron contains a few short nucleotide sequences that act as cues for its removal from the pre-mRN
B.
These special sequences are found at or near each end of the intron and are the same or very similar in all introns. The special sequences are recognized primarily by small nuclear ribonucleoproteins (snRNPs), which direct the cleavage of the RNA at the intron–exon borders and catalyze the covalent linkage of the exon sequences.
C.
Guided by these sequences, an elaborate splicing machine cuts out the intron in the form of a “lariat” structure, formed by the reaction of an adenine nucleotide. The removed intron is eventually degraded in the nucleus.
D.
Unlike the other steps of mRNA production, RNA splicing is carried out largely by RNA molecules rather than proteins. These RNA molecules, called small nuclear RNAs (snRNAs), are packaged with additional proteins to form snRNPs. RNA molecules that catalyze reactions in this way are known as ribozymes. Together, these snRNPs form the core of the spliceosome, the large assembly of RNA and protein molecules that carries out RNA splicing in the nucleus.
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