An operational amplifier, as used in todays consoles, has a calculated gain of 5This means
A. 5 volts, the output changes 10 volts
B. 10 volts, the output changes 5 volts
C. 2 volts, the output changes 10 volts
D. 10 volts, the output changes 2 volts
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职业守则要求快递业务员必须做到()①遵纪守法,诚实守信;②衣着整洁,文明礼貌;③保守秘密,确保安全;④爱岗敬业,务实发展。
A. ①和②
B. ②③和④
C. ①和③④
D. ①②和③
按闭合性肝外伤的病理性质分类,以下选项错误的是
A. 肝包膜下血肿
B. 假性肝破裂
C. 肝实质挫裂伤包括单纯性肝裂伤、多发性肝裂伤或星形肝裂伤
D. 肝实质离断伤和毁损伤
E. 肝中央破裂
Who will be responsible for ensuring that a ship maintains a standard at least equivalent
A. Port state
B. The Administration
C. The shipowner
D. The master
特级美发店的室内燥声不超过()。
A. 30dB
B. 40dB
C. 50dB
D. 65dB