下颌最大侧方运动范围正常情况下约为()
A.8mm
B.10mm
C.12mm
D.14mm
E.16mm
参考答案:C
解析:下颌最大侧方运动范围正常情况下约为12mm。
The United Nations ____ an international organization that tries to find peaceful solutions to
world problems. [ ]
A. is
B. are
C. was
D. were
可控硅整流装置输出端快速熔断器熔体熔断应如何处理?