工人工作必需消耗时间(定额时间)中的“准备与结束工作时间”是属于( )时间。
A.基本工作时间
B.有效工作时间
C.辅助工作时间
D.不可避免的中断时间
参考答案:B
There are ______ people in this village. [ ]
A. eight thousand and two hundred eighty-three
B. eight thousands, two hundred and eighty-three
C. eight thousand, two hundred and eighty-three
D. eight thousand, two hundred eighty-three
试述流行性脑脊髓膜炎暴发型的临床分型及其表现。