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【单选题】
计算机病毒的主要传播途径有A.
电子邮件
B.
.网络
C.
.存储介质
D.
.以上都是
手机使用
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举一反三
【单选题】管理层次较多而管理幅度较小的高耸型组织结构的优点是( )。
A.
缩短上下级距离
B.
信息纵向流通快,管理费用低
C.
管理严密、分工明确,上下级易于协调
D.
被管理者有较大的自主性、积极性和满足感
【单选题】Основной массив пахотных земель（耕地）России располоагается（位于）______.
A.
На берегу（岸边） Северного Ледовитого океана
B.
В европейской части России, на юе Урала и Сибири
C.
На дальнем Востоке
D.
На Урале
【多选题】Effective reading of a conclusion involves identifying its structure. Though different disciplines and journals may show slight differences in their requirements for the format of the conclusion, the ...
A.
The data generated by each are similar, but differ in scale and therefore support different applications.
B.
As sequencing costs continue to decrease, our studies of the microbial world can continue to increase in scope. More than a decade of research has supported a robust consensus: Acute stress impairs memory retrieval.
C.
Here we show that comparable data can be generated on the Miseq for smaller projects where it is important to process samples quickly, for example, in routine environmental or patient monitoring or in preliminary investigations for larger projects.
D.
The protocol presented here opens the Hiseq2000 and Miseq illumina platforms to community amplicon sequencing.
E.
For large projects where time is less of an issue but cost per sequence is a major concern, the Hiseq platform allows massively parallel sequencing at the lowest cost.
F.
We expect that this is another step toward the era of ubiquitous DNA sequencing, when sequencers become standard equipment in research and clinical laboratories.
G.
Finally, we show that technical replicates run on different sequencing platforms and from sequencing of different regions of amplicons should yield the same biological conclusions: critical information appears as more sequencing platforms become available.Descriptive Abstracts include: (输入对应的大写字母，按字母顺序，且字母中间没有标点符号或空格，如：ABCE)
【多选题】Effective reading of a scientific abstract involves identifying its structure. Though different disciplines and journals may show slight differences in their requirements for the format of abstracts, ...
A.
Participants first learned stimuli by either restudying or engaging in retrieval practice. Twenty-four hours later, we induced stress in half of the participants and assessed subsequent memory performance.
B.
We aimed to determine whether a highly effective learning technique could strengthen memory against the negative effects of stress.
C.
More than a decade of research has supported a robust consensus: Acute stress impairs memory retrieval.
D.
Participants who learned by restudying demonstrated the typical stress-related memory impairment, whereas those who learned by retrieval practice were immune to the deleterious effects of stress.
E.
These results suggest that the effects of stress on memory retrieval may be contingent on the strength of the memory representations themselves.
F.
To bolster memory, we used retrieval practice, or the act of taking practice tests.（请按照你的排序，直接输入大写字母，字母之间没有空格或标点符号）
【单选题】新生儿胎龄248天，出生体重2600g，身长46.5cm，头围32cm，胸围31cm( )
A.
早产儿
B.
巨大儿
C.
过期产儿
D.
正常足月儿
E.
足月小于胎龄儿
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