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【单选题】
已知一高斯面所包围的体积内电量代数和 ,则可以肯定:
A.
面上各点的电场强度为零
B.
穿过整个面的电通量为零
C.
穿过面上每一面元的电通量均为零
D.
该面内一定没有电荷
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参考答案:
举一反三
【简答题】This story is about Mrs. Jones, an 82-year-old lady.此题出自2015年贵州遵义中考英语真题及答案,贵州遵义2015年初中毕业招生考试英语试卷 阅读下面短文,理解其大意,然后从各题所给的四个选项中,选出可以填入空白处的最佳选项。 This story is about Mrs. Jones, an 82-year-old lady. 13 her ...
【单选题】正常手术麻醉前应常规禁食( )
A.
4h
B.
6h
C.
10h
D.
8h
E.
24h
【单选题】This story is a ______.
A.
fable
B.
myth
C.
legend
D.
fairy tale
【简答题】患者,女,39岁,65.5kg,农民。因喷施农药3小时突发腹痛而收住院,腹痛性质为脐周痛,压痛明显,反跳痛明显,在当地医院诊断为农药中毒,给予阿托品3mg静推后紧急转诊,入院后测血压100/55mmHg、心率120次/分,神志淡漠,肢端冷,请妇产科会诊,诊断为宫外孕,而行急诊探查手术。 关于宫外孕手术的麻醉前准备,下列叙述正确的是()。A.先治疗失血性休克,再行手术治疗 B.抗休克治疗以血管活性药...
【单选题】This story is than that one.
A.
Interestinger
B.
More interesting
C.
Most interesting
D.
Interesting
【简答题】This story is about a 92-year-old, short, well-behaved and proud lady. She is fully dressed each morning by eight, with her hair fashionably done and makeup perfectly applied, even though she is total...
【单选题】This story is not real it is ______.
A.
imaginative
B.
imaginary
C.
imaginable
D.
imagining
【简答题】Though most people know this story is make-believe, they still tell each other about it(翻译)
【单选题】正常手术麻醉前应常规禁食( )
A.
4h
B.
6h
C.
10h
D.
12h
E.
24h
【单选题】正常手术麻醉前应常规禁食
A.
4h
B.
6h
C.
12h
D.
8h
E.
24h
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