颈部损伤一般不发生
A.颈部血肿B.乳糜瘘C.高位截瘫D.颈椎损伤E.气管移位
参考答案:B
Your speech was heard by a group of judges, all of _______ agreed that it was the best one this year..
A.who
B.whom
C.which
D.them
已知函数
,在区间[2,4]上任取一点x0,使得f’(x0)>0的概率为().