What is the relationship between the foreign firm affiliates and local firms in the country

A．The foreign firm affiliates are developing as rapidly as other local firms.

B．The foreign firm affiliates are not developing as rapidly as other local firms.

C．The foreign firm affiliates in this country have significantly enhanced the technological upgrading of local firms.

D．The foreign firm affiliates in this country have hardly exerted any positive influence on the technological progress of local firms.

男，64岁，有肺心病史5年，经常头痛头晕，1周来咳嗽加重，咳黄痰，呼吸困难，头痛加重，昨日起嗜睡，谵语。查体：神志不清，颜面浮肿，球结膜水肿，口唇发绀，颈静脉充盈，双肺广泛干湿啰音，肝肋下4cm，腹水征(+)，下肢水肿，膝反射减弱，巴宾斯基征(+)。pH7.20，PaCO₂100mmHg，PaO₂40mmHg，HCO₃ˉ21mmol/L

该患者立即应采取的治疗措施是

A．呼吸兴奋剂

B．改善通气和低流量吸氧

C．选用有效抗生素

D．使用降压药