减二线回流换热器内漏时,会造成:()
A、减二回流带水
B、减二泵抽空
C、汽包压力升高
D、汽包蒸汽和锅炉水带油
参考答案:D
下列病变,可引起纵隔左右摆动的为()
A.一侧性肺气肿
B.包裹性积液
C.吸入性支气管异物
D.盘状肺不张
E.大叶性肺炎
---Will there a football match on CCTV 5 this evening?
---Yes. There usually football matches on Sunday evenings.
A.have; have
B.be; will be
C.are; are
D.be; are