工作长度错误的测量方法是
A.患者感觉法B.根管器械探测法C.X线片根管测量法D.根管长度电测量仪E.X线数字成像技术
参考答案:A
The most perceptive of the three, she was the first to realize the ________ danger of their situation.[ ]
A.obvious
B.easy
C.potential
D.necessary
我国森林火灾95%以上是人为引起的,引发森林火灾的人为用火可概括为两种:()。
A.生产性用火
B.非生产性用火
C.上坟烧纸
D.农事用火