引起休克性肺炎最常见的病原菌是()
A.金黄色葡萄球菌
B.呼吸道病毒
C.革兰阴性杆菌
D.肺炎链球菌
E.真菌
参考答案:D
Teenagers ______ their health because they play computer games too much.
A.have damaged
B.are damaging
C.damaged
D.will damage
功率是指含义每小时做功的千瓦数。