防爆泛光工作灯的额定电压是()V。
A.12.0
B.24.0
C.48.0
D.60.0
参考答案:B
关于“师爱”,下列说法正确的是()。
A.出于私情之爱
B.对少数优秀学生的关爱
C.严慈相济,既有母爱的纯真、慈祥,又有父爱的严格、庄重
D.师爱不具有育人的作用
A group of store managers must assemble 280 displays for an upcoming sale. If they assemble 25 percent of the displays during the first hour and 40 percent of the remaining displays during the second hour, how many of the displays will not have been assembled by the end of the second hour
A.70
B.98
C.126
D.168
E.(E) 182