超声波美容仪操作时,以螺旋形或“之”字形移动。()
参考答案:错
Some cyclists make the _______ that traffic laws do not _______ them. It is not true, _______.
A. assumption; apply to; though
B. thought; apply to; however
C. assuming; apply for; though
D. idea; apply for; however
局域网中经常使用共享信道,即所有的机器都接在同一条电缆上。