下列物质可以通过过滤的方法加以分离的是( )
A.高锰酸钾和食盐
B.二氧化硫和氧气
C.过氧化氢和二氧化锰
D.泥沙和木炭
答案:C
I'd like to settle down somewhere ________ the climate is mild and the sun shines all year long. [ ]
A. which
B. that
C. where
D. when
职业健康监护哪两部分?