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【单选题】
与外界环境不断进行物质、能量和信息交流的系统是A.
自然系统
B.
人造系统
C.
开放系统
D.
动态系统
E.
静态系统
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反馈参考答案：
举一反三
【单选题】The sentence“…to myself the stage seemed very misty…”in the 5th paragraph implies that the author
A.
did not get a good seat．
B.
was short sighted．
C.
was a bit sleepy．
D.
was juSt too moved．
【单选题】Choose one sentence that uses "pick up" similarly to the sample. Sample: How do children pick up their mother tongue.
A.
He picked his cap up from the floor.
B.
She was driving to the suburb to pick up her parents.
C.
Where did you pick up your English?
D.
Industrial production is beginning to pick up.
【简答题】当振荡脉冲频率为12MHZ时,一个机器周期为 ,当振荡脉冲频率为6MHZ时,一个机器周期为 。
【单选题】陶女士,35岁,持续高热,怀疑败血症。护士为其采集血培养标本,错误的操作是
A.
检查容器有无裂缝
B.
检查培养基是否足够
C.
采集时严格执行无菌技术
D.
采血后即将针头插入培养瓶注入血液
E.
血液注入培养瓶内应轻轻摇匀
【简答题】当振荡脉冲频率为12MHz时,一个机器周期为 ;当振荡脉冲频率为6MHz时,一个机器周期为 。
【单选题】陶女士,35岁。持续高热,怀疑败血症。护士为其采集血培养标本,错误的操作是( )
A.
检查容器有无裂缝
B.
检查培养基是否足够
C.
采集时严格执行无菌技术操作
D.
采血后即将针头插入培养瓶注入血液
E.
血液注入培养瓶内应轻轻摇匀
【单选题】陶女士,35岁。持续高热,怀疑败血症。护士为其采集血培养标本,错误的操作是
A.
检查容器有无裂缝
B.
检查培养基是否足够
C.
采血后即将针头插入培养瓶注入血液
D.
血液注入培养瓶内应轻轻摇匀
E.
采集时严格执行无菌技术操作
【单选题】What does the phrase 'pick up the pieces'(Sentence 2, Paragraph 2) probably mean?
A.
repair items that get broken
B.
pick up the children's clothing
C.
solve their problems
D.
match the pieces together
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