男性患者,23岁,近日咳嗽,咳黄绿色痰,该患者的诊断可能为
A.支原体肺炎B.钢绿假单胞菌肺炎C.大叶性肺炎D.二尖瓣狭窄E.支气管扩张
参考答案:B
The number of teachers in our college _____ greatly increased this term. A number of teachers in this school _____ from the countryside.
A.is; is
B.is; are
C.are; are
D.are; is
润滑脂填充量随加脂部位的结构和容积而有所不同,一般填充至容积的()为宜。
A.1/3以下
B.1/3~2/3
C.2/3以上
D.都可以