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【单选题】
图 1 所示电路中的所有电阻 R 均为 10 Ω,则等效 电阻 R AB ( )
A.
30 Ω
B.
20 Ω
C.
16 Ω
D.
40 Ω
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参考答案:
举一反三
【简答题】计算: (1)-3+10-5 (2)-0.5+(-15)-(-17)-|-12| (3) -3.5÷ 7 8 ×(- 3 4 ) (4) ( 1 2 + 5 6 - 7 12 )×(-36) (5) -2×(- 1 2 ) 2 +|-2 | 3 -(- 1 2 ) (6)-1 4 +〔1-(1-0.5×2)〕÷|2-(-3) 2 |
【单选题】患者男,28岁。消化性溃疡患者,给予胶体次枸橼酸铋+克拉霉素+呋喃西林三联治疗期问出现黑便,担心病情加重。行大便隐血试验,报告呈阴性。此时护士解释其黑便原因是
A.
呋喃西林不良反应
B.
胶体次枸橼酸铋不良反应
C.
克拉霉素不良反应
D.
溃疡出血
E.
溃疡癌变
【简答题】r 3 ______ 0.4 ______ 3.5 ______ d ______ 5 ______ 12 ______ 4.2
【简答题】The data received from the two _____ whirling around Mars ____ that there is much evidence that huge thunderstorms are occurring about the equator of the planet. A. aircraft indicates     B. aircraft ...
【判断题】鸡的凝血机制好,红细胞呈椭圆形,无细胞核。
A.
正确
B.
错误
【单选题】There is much ______ can be done about the accidents ______ from carelessness.
A.
which arose
B.
that arising
C.
which arisen
D.
that arise
【单选题】If roundworms are removed from the soil and placed in a liquid, they thrash helplessly around.
A.
carelessly
B.
tirelessly
C.
powerlessly
D.
heartlessly
【简答题】Cycling is the fastest, cheapest, most healthy and environmentally friendly way to get around London, and____________.(越来越多的伦敦人开始尝试骑自行车).
【判断题】Is there a coace around here conduct the exercises?
A.
正确
B.
错误
【简答题】计算: ①8+(﹣10)+(﹣2)﹣(﹣5); ②﹣3.5÷ ×(﹣ )×|﹣ |; ③﹣12+[20﹣(﹣2) 3 ]×(﹣4);④ .
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