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【单选题】
当电容元件两端的电压降低时,电场能量减小,在此过程中电容向电源放还能量,可见电容元件是( )。A.
电阻元件
B.
耗能元件
C.
储能元件
D.
电源元件
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【单选题】I saw Ken in the meeting room, he ______ Joe for the school magazine.
A.
interviews
B.
interviewed
C.
has interviewed
D.
was interviewing
【单选题】休克扩容时以下哪种情况提示血容量不足,可加快输液
A.
CVP<0.49kpa，血压降低
B.
CVP正常
C.
CVP>1.47kpa，血压降低
D.
CVP>1.47kpa血压正常
E.
CVP正常，血压降低
【单选题】休克扩容时以下哪种情况提示血容量不足,可加快输液
A.
CVP＜5mmH2O,血压降低
B.
CVP正常
C.
CVP＞12cmH2O,血压降低
D.
CVP＞12cmH2O，血压正常
E.
CVP正常，血压降低
【单选题】休克扩容时以下哪种情况提示血容量不足,可加快输液
A.
CVP<5cmH2O,血压降低
B.
CVP正常
C.
CVP>15cmH2O,血压降低
D.
CVP>15cmH2O,血压正常
E.
CVP正常,血压降低
【单选题】休克扩容时以下哪种情况提示血容量不足,可加快输液
A.
CVP<0.49kPa,BP降低
B.
CVP正常,BP正常
C.
CVP>1.47kPa,BP降低
D.
CVP>1.47kPa,BP正常
E.
CVP正常,BP降低
【单选题】Joe is not a freshman, since he lives in a fraternity, and freshmen are not allowed to live in fraternities. He also can’t be a senior, since he has not declared a major. And he can’t be a junior, bec...
A.
(1) Joe lives in a fraternity.(2) Freshmen are not allowed to live in fraternities.(3) Joe is not a freshman.(4) Joe has not declared a major.(5) Joe is not a senior.(6) I never met Joe before today.(7) If Joe were a junior, I would have met him before today.(8) Joe is not a junior.______________________∴(9) Joe is a sophomore.
B.
(1) Joe lives in a fraternity.(2) Joe is allowed to live where he lives. (suppressed premise)(3) Freshmen (first-year students) are not allowed to live in fraternities.______________________∴(4) Joe is not a freshman.(5) Joe has not declared a major.(6) All seniors (fourth-year students) have declared a major. (suppressed premise)______________________∴(7) Joe is not a senior.(8) I never met Joe before today.(9) If Joe were a junior (third-year student), then I would have met him before today.______________________∴(10) Joe is not a junior.(11) Joe is either a freshman, a sophomore, a junior, or a senior. (suppressed premise)______________________∴(12) Joe is a sophomore (second-year student). (from 4, 7, 10, and 11)
C.
(1) Joe lives in a fraternity.(2) Joe is allowed to live where he lives. (suppressed premise)(3) Freshmen (first-year students) are not allowed to live in fraternities.______________________∴(4) Joe is not a freshman.______________________∴(5) Joe is a sophomore (second-year student).(6) Joe has not declared a major.(7) All seniors (fourth-year students)have declared a major. (suppressed premise)______________________∴(8) Joe is not a senior.______________________∴(9) Joe is a sophomore.(10) I never met Joe before today.(11) If Joe were a junior (third-year student), then I would have met him before today.______________________∴(12) Joe is not a junior.______________________∴(13) Joe is a sophomore.
【单选题】休克扩容时以下哪种情况提示血容量不足,可加快输液
A.
CVP<0．49kPABP降低
B.
CVP正常BP正常
C.
CVP>1．47kPABP降低
D.
CVP>1．47kPABP正常
E.
CVP正常BP降低
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