安全价值观是安全文化最（）的内容。
A.根本
B.核心
C.基础
参考答案：B
—Goodbye, Jim. Please say hello to your mum for me.
—_____. Thank you! [ ]
A. I will
B. You are so nice
C. No problem
D. The same to you
正常尿量是指24h尿量平均约为
A．500mlB．1000mlC．1500mlD．2000mlE．2500ml
