What’s the problem with Ann’s current community?
A. It's really close to school
B. It's big anf bright
C. It has coused her much inconvenience
查看答案
Trick Anne's requirements for renting a new apartment
A. The rent should be no more than 700 per month including utilities
B. It must be located somewhere downtown
C. It should be a short distance from campus
D. It should be a newly furnished
E. A parking space is must
F. pets should be allowed in the building
G. It should be a fully furished apartment
以下哪种因素对塑料制品的烧焦影响最大ˍˍ？
A. 注塑压力
B. 注塑速度
C. 注塑温度
D. 模具温度
为使塑料制品上呈现正凹字样，模具相应位置应该加工ˍˍ字样。
A. 正凹
B. 正凸
C. 反凹
D. 反凸
一般地，在注塑成型过程中，模具温度对生产影响很大，模具通入冷却水是为了ˍˍ，而模具通入热水（热油）或加热是为了ˍˍ。
A. 延长成型周期、提高熔体流动性
B. 缩短成型周期、降低熔体流动性
C. 缩短成型周期、提高熔体流动性
D. 延长成型周期、降低熔体流动性
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