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麻疹初期的皮疹特点是()
服用口服避孕药的适应证有( )。
试述我国城市发展战略的潜在重点是什么?
ADCC作用
女,24岁,入住新居后频繁咳嗽并气喘,查体肺部有哮鸣音,考虑病因为()
一位物理教师在课堂上问学生:"把一块铁块和一块木块放在水里,会出现什么情况?"学生回答:"铁块下去,木块浮在水面上。""为什么呢?""因为铁重。""而钢铁制的巨轮也很重,为什么却浮在水面上呢?"教师这一问,学生的情绪一下子高涨起来,开始积极地思考,之后,教师再引出"阿基米德原理"。问题:这一教学实例体现了什么教学原则?你有什么感想?
联保贷款协议有效期为()年。
某地有20万人口,1998年全死因死亡2000人,同年有结核病患者600人,其中男性400人,女性200人;该年有120人死于结核病,其中100人为男性。该地1998年粗死亡率为()。
简述短距离无线通信的特点。
菌体细长弯曲,革兰染色阳性,美蓝染色可见菌体内有异染颗粒的细菌是()。
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In an automatic mooring winches, the wire is paid off the barrel at() a tension ...
In an automatic mooring winches, the wire is paid off the barrel at() a tension ...
Worm geared automatic mooring winches are () as the multi-start feature reduces ...
The majority of automatic mooring winches are spur geared to improve the backwar...
Worm geared automatic mooring winches are () as the multi-start feature reduces ...
The majority of automatic mooring winches are spur geared to improve the backwar...
Mooring winches are often combined with () units so that one prime mover drives ...
The spur geared mooring winches have advantages over worm geared ones in()
Mooring winches are often combined with () units so that one prime mover drives ...
The spur geared mooring winches have advantages over worm geared ones in()