慢性肺心病急性加重期的关键性的治疗措施是()
A.改善呼吸功能
B.控制呼吸道感染
C.减轻心脏负荷
D.应用洋地黄制剂
E.控制心律失常
参考答案:B
The piano in the other shop will be _____, but _____.
A.cheaper; not as better
B.more cheap; not as better
C.cheaper; not as good
D.more cheap; not as good
户外柱上变压器安装完进行全面检查无误后,方可对配电变压器进行第一次受电,各项正常后,可带一定负荷运行24h,没问题后便可投运。