当天或在规定时间内没有用完的焊材应及时回收,使用时应重新烘烤(不需烘烤的焊条除外),但重复烘烤次数不应超过()次。
A、5
B、2
参考答案:B
治疗风热、肝热之目赤肿痛的最佳.药对是( )
A.菊花、木贼
B.桑叶、菊花
C.桑叶、牛蒡子
D.蝉衣、木贼
E.薄荷、柴胡
A typical application of this (71) is ADSL. It is emerging as the technology for home-and small-office Internet connectivity. It provides either 1.5 Mb/s~8 Mb/s from the network to the user and 64 Kb/s~512 Kb/s in the reverse direction depending on the distance, 12 000 or 18 000 feet.. The different speed for each direction gives it the (72) label. ADSL is designed to take advantage of the fact that video-on demand, telecommuting, and Internet access traffic are inherently asymmetrical. The user (73) a brief message up to the network and receives a ton of data coming back, either a movie or a piece of data download. Under such a scenario, low-speed traffic to the network is just fine. ADSL delivers high (74) where you need it and only uses a single copper pair. Through multiplexing, it also reserves (75) of the bandwidth for POTS.
A.sends
B.personates
C.receives
D.writes