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【判断题】
渐开线的形状仅取决于基圆的大小,基圆越小,渐开线越弯曲;基圆越大,渐开线越平直;基圆为无穷大时,渐开线为斜直线A.
正确
B.
错误
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【简答题】药品非临床研究质量管理规范是
【简答题】______, for its exquisite form. and melody, is regarded by many critics as the summit of Alfred Tennyson s poetic achievement.
【单选题】Under her administration claim the critics,______ high-rise construction has destroyed the character of the city's downtown darkening its streets and driving business.
A.
rapid
B.
rampant
C.
speedy
D.
random
【简答题】热继电器的分类、结构及选用原则
【单选题】以下对于临边防护的说法错误的是（）。
A.
基坑周边，尚未安装栏杆或栏板的阳台、料台与挑平台周边，雨篷与挑檐边，无外脚手的屋面与楼层周边及水箱与水塔周边等处，都必须设置防护栏杆
B.
分层施工的楼梯口和梯段边，必须安装临时护栏。顶层楼梯口无需安装防护栏杆
C.
各种垂直运输接料平台，除两侧设防护栏杆外，平台口还应设置安全门或活动防护栏杆
D.
当临边的外侧面临街道时，除防护栏杆外，敞口立面必须采取满挂安全网或其他可靠措施作全封闭处理
【单选题】Its critics claim that when advertising ____ the elasticity of demand, firms are able to ____.
A.
decreases; lower their advertising budget
B.
increases; become more competitive
C.
increases; increase their advertising budget
D.
decreases; charge a larger mark-up over marginal cost
【单选题】第二篇 Not content with its doubtful claim to produce cheap food for our own population, the factory farming industry also argues that 'hungry nations are benefiting from advances made by the poultry(家禽)...
A.
efficiency must be raised in the poultry industry
B.
raising poultry can provide more protein than growing grain
C.
factory farming will do more harm than good to developing countries
D.
hungry nations may benefit from the development of the poultry industry
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