题目:
存储周期是指( )。
A.存储器的读出时间
B.存储器的写入时间
C.存储器进行连续读和写操作所允许的最短时间间隔
D.存储器进行连续写操作所允许的最短时间间隔
答案:
参考答案:C
存储周期是指( )。
A.存储器的读出时间
B.存储器的写入时间
C.存储器进行连续读和写操作所允许的最短时间间隔
D.存储器进行连续写操作所允许的最短时间间隔
参考答案:C
把0.02mol/LCH3COOH溶液和0.01mol/LNaOH溶液以等体积混和,则混合液中微粒浓度关系正确的是
A.c (CH3COO-)>c (Na+)
B.c (CH3COOH)+c (CH3COO-)="0.02mol/L"
C.c (CH3COOH)>c (CH3COO-)
D.c (OH-)>c (H+)
认真阅读下列短文,并根据所读内容在文章后表格中的空格里填入一个最恰当的单词。 注意:每个空格只填1个单词。请将答案写在答题卡相应题号的横线上。 Have you ever intended to be fully absorbed in your work but found yourself distracted by e-mail, the Internet and other things throughout the day? "People often lose their concentration when they are bored, of course, but also when they are engaged in challenging tasks," says Peter Bregman. "They sometimes have a feeling to escape from what's difficult or boring, so they jump out," he says. The part of the brain devoted to attention is connected to the brain's emotional center. Any strong emotion—quarrels with colleagues, problems at home—can interrupt our attention. Studies over the last decade have shown that too much work to do at a time can easily lead to distraction. Refocusing is hard for many people. Robert Epstein suggests the following, "Stop and listen to music for a few minutes. Go for a short walk or take a deep breath, where you breathe in deeply, count to five slowly, hold it and breathe out very slowly." This can "blow out all the tension and the unwanted in your mind to restore your focus." Take more control by structuring your time and becoming more aware of your behaviors. "Setting the phone alarm to go off every hour is my way of creating awareness," Mr. Bregman says," You have to inform yourself that you've lost focus in order to do something about it." Starting the day with a to-do list is important, such as when to eat, when to go to the gym or take a walk. But if it's overly ambitious, you will put yourself in a state of anxiety, which makes it hard for the brain to concentrate. "Choosing three or four things as your priority for the day allows your brain to settle down and focus," he says.
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轻度会阴撕裂或者会阴切口缝合后在产后几日能自行愈合()
A.产后3~5日
B.产后6~7日
C.产后10日
D.产后2~3日
E.产后3周
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C.①②③
D.①②④
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B.原发性呼吸性碱中毒
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