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【单选题】
导管相关性血流感染:带有血管内导管或者拔除血管内导管( )内的患者出现菌血症或真菌血症,且除血管导管外没有其他明确的感染源。
A.
12h
B.
24h
C.
48 h
D.
72h
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【单选题】宣扬“儿童中心论”,并提出教育即生长、教育及生活、教育即经验的改造的教育家是( )。
A.
卢梭
B.
陶行知
C.
杜威
D.
陈鹤琴
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【单选题】A group of mice was released into a large field to which no other mice had access. Immediately after the release, a representative sample of the mice was captured, and the fur color of each individual...
A.
The allele for gray fur color is unstable, and over twenty years most of those alleles mutated to become alleles for black fur.
B.
The field was composed primarily of light-colored soil and little vegetation, affording gray mice protection from predators.
C.
Sexual selection led to increased mating frequency of black and brown versus gray and brown.
D.
The gray mice were hardest to capture and so were underrepresented in the twenty-year sample.
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【单选题】如图所示,为Y-△降压起动电路,若与KT线圈串联的常闭辅助触点因故不闭合,其他均正常,则在合上QS三相电源开关,按下SB2后,电动机会______。
A.
电动机只能Y起动和运转
B.
电机仍能Y降压起动，△运转
C.
电机△起动，Y运转
D.
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【简答题】提出'教育即生活'、'教育即生长'的教育家是（ ）。
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【单选题】当颅内压增高时,能挤压延髓造成呼吸、循环衰竭后果的结构是
A.
小脑扁桃体
B.
小脑绒球
C.
小脑蚓部
D.
小脑齿状核
E.
小脑顶核
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【单选题】A 60-year-old previously healthy man sees his physician because he feels feverish and weak. He reports passing dark-colored urine on several occasions during the past month but has no urinary frequenc...
A.
Straining of urine for calculi
B.
Urine microbiologic culture
C.
Abdominal CT scan for renal mass
D.
Collection of a 24-hour urine specimen for protein
E.
Percutaneous renal biopsy
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【单选题】The crystal thickness and transducer frequency are related. Lower the crystal thickness
A.
The lower the frequency
B.
The higher the frequency
C.
There is no appreciable affect
D.
None of the above
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【判断题】在桥式整流电路中，负载RL越小，输出直流电压平均值UO(AV)就越大.
A.
正确
B.
错误
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【简答题】杜威提出教育即生长 、教育即生活 、( )。
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【简答题】一个完整的数字博物馆至少包括: 1 2 3
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【单选题】宣扬“儿童中心论”,并提出教育即生长、教育及生活、教育即经验的改造的教育家是( )。
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【单选题】如图所示,为Y-△降压起动电路,若与KT线圈串联的常闭辅助触点因故不闭合,其他均正常,则在合上QS三相电源开关,按下SB2后,电动机会______。
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A.
小脑扁桃体
B.
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【单选题】A 60-year-old previously healthy man sees his physician because he feels feverish and weak. He reports passing dark-colored urine on several occasions during the past month but has no urinary frequenc...
A.
Straining of urine for calculi
B.
Urine microbiologic culture
C.
Abdominal CT scan for renal mass
D.
Collection of a 24-hour urine specimen for protein
E.
Percutaneous renal biopsy
查看完整题目与答案
【单选题】The crystal thickness and transducer frequency are related. Lower the crystal thickness
A.
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B.
The higher the frequency
C.
There is no appreciable affect
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查看完整题目与答案
【判断题】在桥式整流电路中，负载RL越小，输出直流电压平均值UO(AV)就越大.
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【简答题】杜威提出教育即生长 、教育即生活 、( )。
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【简答题】一个完整的数字博物馆至少包括: 1 2 3
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