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【单选题】
患者男,60岁。既往有慢性支气管炎病史10年,1因感冒后咳嗽加重。查体:神志模糊,两肺哮鸣音,心率120次/分,血气分析:pH7.30,PaO 2 50mmHg,PaCO 2 80mmHg。下列治疗措施正确的是()
A.
静脉滴注尼可刹米
B.
静脉滴注苷C(西地兰)
C.
静脉滴注5%碳酸氢钠
D.
静脉注射速尿
E.
人工通气治疗
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举一反三
【单选题】The solitude of the sea had made him keenly __________ every sight, sound and touch.
A.
sensitive to
B.
indispensable to
【单选题】已知函数f(x)=x 3 -3x 2 +a,若f(x+1)为奇函数,则曲线y=f(x)在点(0,a)处的切线方程是 [     ]
A.
x=0
B.
x=2
C.
y=2
D.
y=4
【单选题】已知曲线y=f(x)在点(x,y)的切线斜率为 ,且过点(1,1),则此曲线方程是(    )。
A.
B.
C.
【单选题】The solitude of the sea had made him keenly __________ every sight, sound and touch.
A.
indispensable to
B.
sensitive to
C.
superior to
D.
available to
【单选题】制剂时皂苷不适宜的剂型是
A.
片剂
B.
注射剂
C.
糖浆剂
D.
冲剂
【单选题】Which of the following expression is NOT a suitable description for the solitude and mysteriousness of Lucy in the “Lucy Poems”?
A.
“Untrodden ways.”
B.
“None to praise.”
C.
“Very few to love.”
D.
“Fair as a star.”
【简答题】设曲线方程为y=f(x),且已知f(2)=7,f'(2)=∞,请写出曲线在点x=2处的切线方程及法线方程.
【简答题】如图电路中,电流 I 的最大值为多少? R 为何值时,可在电阻 R 上获得最大功率?
【简答题】2) Later, in the solitude of his room, he heard the hesitating patter of rain on the roof
【简答题】在如图所示电路中,稳压管最大稳定电流 I Zmax =50mA,稳压值U Z =10V,I Zmin =5mA,则(1)当E=15V时,试求输出电压U O 的值 ;( 2)当E=45V时,试求U O 的值;( 3)要使稳压管能安全工作,E最大值为多少?要使电路具有良好的稳压作用,E最小值为多少?
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