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【单选题】
CR400BF型动车组头车撒砂加热器和尼龙垫板固定M8螺栓扭力施加扭力（ ）N·m。
A.
15
B.
21
C.
23
D.
27
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参考答案：
参考解析：
刷刷题刷刷变学霸
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【单选题】Most shoppers know the feeling. You stand in front of piles of organic produce and wonder what those premium prices are buying you over and above what you get from standard foods. Not a lot nutrition-...
A.
do not use naturally produced fertilisers
B.
produce carbon dioxide when removing weeds
C.
use high doses of weed-killer
D.
use too many resources to qualify for organic status
【单选题】为了减小右侧末端基牙所受的扭力，可设计（）。 A．延伸卡环 B．对半卡环 C．圈形卡环 D．PPI卡环 E．三臂卡环
A.
男，60岁。
缺失，
近中舌向倾斜、不松动，左侧下颌隆凸明显，舌侧前部牙槽骨为斜坡型，口底深，余牙正常。拟采用可摘局部义齿修复
缺失，近中舌向倾斜、不松动，左侧下颌隆凸明显，舌侧前部牙槽骨为斜坡型，口底深，余牙正常。拟采用可摘局部义齿修复