题目内容

LRRA发射的无线电信号是什么类型的信号?

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上合架的注意事项中,错误的是

A. 上合架前要检查合架的各个组成部分是否完整,各固定螺丝能否完全拧紧
B. 在用石膏将下颌模型固定在合架上时,在石膏初凝前,应当将合架正置
C. 下颌模型因石膏太软而下沉,与基托组织面失去接触,会导致上、下颌颌位关系的改变
D. 石膏初凝后,最好能用绳将合架上、下颌体的前端捆扎固定
E. 在确定髁导斜度和切导斜度之前,要洗净合架上多余的石膏

What we're trying to do is to have companies (manage) __________ and use plastic much more wisely.

You can save energy by sometimes taking the bus, riding a bike, or simply (walk) __________.

We will update you on the outcome of any investigation and contact you for (addition) __________ information if necessary.

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