通常单纱的捻向为______,合股捻向为______。
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一批18tex棉纱,测得平均捻度为76捻/10cm,求:(1)特数制捻系数;(2)若用该捻系数生产14tex棉纱的捻度是多少。
测得某棉纱的平均直径为0.19mm,纱表面纤维的平均捻回角为20度,求该纱的捻度与捻系数。
Listen to the passage and fill on the blanks with what you hear.[音频]Apple Inc. is one of 1. ______________________in the world, which was founded by Steve Jobs, Stephen Gary Wozniak, and Ronald Gerald Wayne on April 1, 1976. It grew rapidly and 2. _____________________ by developing innovative products such as the Mac, the iPod, the iPhone and the iPad, which changed 3. ________________________, entertainment and even the lives of millions of people. Apple products enjoyed wide recognition among end-users both for 4. _____________________ and their powerful applications.At Apple, innovation was a way of life and a part of its corporate DNA. Over the years, the company constantly innovated with its business model to respond to market needs and challenges and to deliver quality products and services. For 2006—2011, Apple was ranked No. 1 on the world’s 5. __________________________worked out by Business Week.According to experts, it was Steve Jobs’ vision of developing extraordinary products that made Apple 6. _____________________. His pursuit of innovation and his determination to change the world moved and shocked us. Unfortunately, on October 5, 2011, Jobs died of illness at the age of 56. Despite his death, Jobs’ spirit will stay forever in Apple.
下面代码的输出结果是:str1 = "k:1|k1:2|k2:3|k3:4"str_list = str1.split('|')d = { }for l in str_list:key,value = l.split(' : ')d[k] = valueprint(d)
A. [k:1, k1:2, k2:3, k3:4]
B. ['k':'1', 'k1':'2', 'k2':'3', 'k3':'4']
C. {'k':'1', 'k1':'2', 'k2':'3', 'k3':'4'}
D. 'k:1, k1:2, k2:3, k3:4'