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有的广告发出能立即引起兴趣,有的广告需要更长时间才能产生效果。这属于广告效果的()。
员工培训是企业的一种投资行为,和其他投资一样,也要从投人产出的角度考虑效益大小及远期效益、近期效益问题。
照明灯的单极开关应接在()上。
下列()因素不属于人口环境。
稽查工作底稿主要包括哪些内容?
曝气池中悬浮固体(MLSS)浓度为2700mg/L,回流污泥浓度为9000mg/L,则污泥回流比R=()。
公文开头适宜采用的形式有( )。
空白试验()。
一名67岁女性患者,因膝关节骨性关节炎继发较严重膝内翻拟行膝关节置换治疗,选择哪种假体为好()
药物应按不同性质保存,不规范的是()
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The part of the anchor windlass that engages the anchor chain for lifting is cal...
If you shorten the scope of anchor cable,your anchor’s holding power().
What is the normal length of anchor cable used to anchor a vessel?()
When the anchor reaches the bottom ,hoist the anchor ()by day.
When the anchor()(到底),hoist the anchor ball by day.
This is()where we shall anchor.