设在x=0处连续,则k=().
参考答案:1
解析:
由连续的三要素及f(0-0)=f(0),得k=1.
His cousin works ____________a magazine ____________a reporter .
A.in , for
B.for , in
C.for , as
D.as , for
确诊需作的检查是
A.脑CTB.脑电图检查C.血清铁检查D.血清维生素B12、叶酸测定E.血清钙、磷、碱性磷酸酶测定