0.24×0.3的积共有三位小数。[ ]
正确
为给光信号提供较高的频率精度和稳定度，ITU-TG.692建议中规定了DWDM系统的绝对参考频率为（）THz。
Wake up, Nick. It's time to_______, or you'll be late for school. [ ]
A. get up
B. get back
C. get away
D. get off
