新蒸汽压力升高,会引起汽轮机最末几级蒸汽的()增加,不仅使湿汽损失增大,机组的经济性下降,而且会影响这几级叶片的寿命。
A.温度
B.流量
C.湿度
D.压力
参考答案:C
下列关于肺炎链球菌肺炎的典型体征的描述,不正确的是()
A.急性热病容
B.口唇疱疹
C.患侧触觉语颤增强
D.患侧呼吸运动增强
E.叩诊可呈浊音或实音
A company may advertise its products _____ newspapers, magazines, television, the Internet and other media. [ ]
A. as a result of
B. by means of
C. thanks to
D. according to