DMD患儿的智力水平常常()
A.显著受损。
B.轻度受损
C.正常
D.较正常人群略好
E.显著优于正常人群
参考答案:B
I'm. hungry. Would you please give me to eat?[ ]
A. delicious something
B. something delicious
C. anything delicious
D. nothing delicious
永磁磁选机的磁系是由锶铁氧体或稀土永磁体组成。