更多“易与生物大分子形成氢键，增强与受体结合能力的官能团是（）”相关的问题
《药品注册管理办法》（局令第28号）的实施日期是（）
A.2002年10月30日
B.2005年2月28日
C.2005年5月1日
D.2007年10月1日
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S功能设定有两种输出方式供选择：分别是（）。
A.编码方式和数字方式 B.逻辑式和数字方式 C.编码方式和逻辑式 D.编制方式和数字方式
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下面选项中，不是出自《孟子》的是（）
A.彼一时，此一时也。 B.人无远虑，必有近忧。 C.不以规矩，不能成方圆。 D.工欲善其事，必先利其器。
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热电偶的冷端温度补偿常用的方法有 冷端恒温法 、( )、 计算修正法 和 电桥补偿法 。
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6岁女孩，因眼睑伴下肢水肿一周，咳嗽伴喘憋一天入院。查体：血压130/96mmHg，半卧位，呼吸促，眼睑及双下肢肿胀，心率135次/分，律齐，心音有力，双肺底部可闻及细小水泡音，肝肋下3.5cm。此患儿诊断为
A.急性肾炎 B.肺炎支原体肺炎 C.急性肾炎合并肺炎 D.支气管肺炎合并心衰 E.急性肾炎合并循环充血
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客体信息系统决定了系统能达到的最高水平。
A.对 B.错
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零件加工后的实际几何参数与理想几何参数相符合的程度称为（）。
A.加工精度
B.加工方法
C.加工误差
D.加工表面质量
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镐形截齿切削角为45°时，圆锥角是（）。
A.50°
B.78°
C.80°
D.10°
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一个捕蝴蝶的网袋放在均匀的电场中，网袋的边框是半径为a的圆，且垂直于电场，则通过此网袋的电场通量为（）
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下列属于《易制毒化学品管理条例》规定管制的化学品是（）。
\tA、丙酮
\tB、硫代硫酸钠
\tC、电解液
\tD、氨水
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Chicago Chicago, lying in the east of the USA, is the rather young American city. It was almost completely rebuilt after the Great Fire of 1871. One’s first impression of the city may include streams of cars running to-and-fro on the highways, skyscrapers and the wide green water of Lake Michigan, which lies to the northeast of the city. The area of the city is over 228 square miles with a population of about 3 million. The climate of Chicago on the whole is almost the same as that of Beijing with rather hot days in summer, colorful and fresh days in fall and icy but often clear days in winter. The spring in Chicago is a little changeable in temperature. For instance, I saw a snowfall in early April this year while some of the flowers were already in full bloom. Chicago is also famous for its frequent strong winds, and as a result has got the name of "the Windy City".
Chicago
Chicago, lying in the east of the USA, is the rather young American city. It was almost completely rebuilt after the Great Fire of 1871. One’s first impression of the city may include streams of cars running to-and-fro on the highways, skyscrapers and the wide green water of Lake Michigan, which lies to the northeast of the city. The area of the city is over 228 square miles with a population of about 3 million.
The climate of Chicago on the whole is almost the same as that of Beijing with rather hot days in summer, colorful and fresh days in fall and icy but often clear days in winter. The spring in Chicago is a little changeable in temperature. For instance, I saw a snowfall in early April this year while some of the flowers were already in full bloom. Chicago is also famous for its frequent strong winds, and as a result has got the name of "the Windy City".
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JZ-7型空气制动机七步闸试验中手柄取出位检查：将自阀手柄由运转位迅速移置手柄取出位，均衡风缸应减压240-260kPa，列车管仍为定压，应自锁（）
A.总风遮断阀
B.中继阀
C.自阀
D.单阀
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CRH5A动车组哪个盖板是内嵌式的（）
A.反冲洗盖板
B.注水口盖板
C.注砂口盖板
D.远程排水阀盖板
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对于LZ型螺杆钻具：继续增加钻压，当马达压降超过最大设计值时，钻具将发生滞动，一旦钻具发生滞动，应迅速将钻具提离井底降低钻压，长时间滞动会（）。
A . A、钻具空转
B . B、增大钻具扭矩
C . C、使旁通阀打开
D . D、严重损坏钻具
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当土壤水分充足、氮素供应多时，植株的根冠比（）。
A.增大
B.减小
C.不变
D.大起大落
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