下列词语中,有错别字的一组是( )
A.嬉戏蝉联碟子 博闻强识
B.雾霭寥落 歉收 积毁销骨
C.步履黯然纪实通宵达旦
D.干练坐标原委名符其实
答案:D
— Volunteering is becoming _____ popular in China.
— Yeah, people are now aware that helping others is helping themselves. [ ]
A. naturally
B. successfully
C. splendidly
D. increasingly
某地夏季为标准大气压,室外通风计算温度为32℃,设计车间内一高温设备的排风系统,已知:排风罩吸入口的热空气温度为500℃,排风量为1500m3/h。因排风机承受的温度最高为250℃,采用风机入口段混入室外空气做法,满足要求的最小室外空气风量应是下列何项(空气比热容按1.01kJ/(kg·K)记取,不计风管与外界的热交换。)()
A.600~700m3/h
B.900~1 100m3/h
C.1400~1600m3/h
D.1700~1800m3/h