肺的防御机制有()
A.咳嗽喷嚏
B.黏液纤毛运送排出异物
C.巨噬细胞吞噬
D.物理化学屏障和免疫反应
E.肺泡吸收吸入的成分
参考答案:D
—What do you think of our next game?
—A bit worried.We ______ it with our two major players injured.
A.have lost
B.will have lost
C.lost
D.are losing
从事检修工作室必须执行好什么制度?