入侵报警功能设计时紧急报警装置应设置为24小时防区,处于不可撤防状态。()
参考答案:对
I can rest ( ) that they will get the goods shipped by the end this month.
A. assuredlyB. assuredC. and assureD. assuring
錾削时切削角度,一般应使后角在()
A.5~8°
B.15~18°
C.0°