工控机对集气管压力的采样和调节速率大约是每()秒一次。
参考答案:30
某病人左下6缺失,要求作固定义齿修复,经检查;左下57牙冠、牙根、牙髓、位置和牙周组织情况均良好,选左下57基牙作固定桥修复时,桥体应恢复该牙原面大小的()
A.100%
B.95%左右
C.90%左右
D.85%左右
E.80%左右
__________ the displays of culture and technology, the Shanghai Expo also showcased the spirit of voluntarism.(志愿者精神)
A.Apart from
B.More than
C.Instead of
D.Other than