核右移是指外周血中出现5叶核以上的中性粒细胞超过()
A.2%
B.3%
C.4%
D.5%
E.10%
参考答案:B
Students shouldn't be given so difficult a problem _____ they can not work out.[ ]
A. that
B. which
C. while
D. as
死亡原因不明的死畜肉,处理方法是()
A.内脏高温处理,肉块后熟后可食用
B.内脏弃除,肉块高温处理后方可食用
C.烈日曝晒2小时可安全食用
D.不得食用
E.视死畜肉的新鲜程度而定