茶艺馆的经营管理的重点是:抓货源管理、()、抓内部管理三个方面。
A. 抓人员培训
B. 抓考勤管理
C. 抓岗位职责管理
D. 抓人才管理
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对一台15kg分度值是5g的电子计价秤进行检定,置零准确度测试的零点误差(Eo)为1g.在测试 7.5kg时,在承载上加放7.5kg的标准砝码和2g的闪变点砝码,此时显示7.5kg,求此时该秤的示值误差(E)和修正误差(Ec)
辐射管表面温度低于()℃的辐射采暖称为低温辐射采暖。 A80 B70
A. 80
B. 70
C. 60
D. 50
通读下面的短文,回答题。
提示:爱丽丝的妈妈病了,爱丽丝想向老师格林先生请几天假。
Alice : Excuse me, Mr. Green. I" d like to take a few days off.
Green : 51 ?
Alice:My mother is ill. I have to take care of her.
Green:Oh dear! I am sorry to hear that. 52 ?
Alice:No,thank you. My mother has caught a bad cold. She has a high fever and coughs dayand night. The doctor says my mother has to be in hospital for a few days. I would like tobe with her.
Green : I understand. 53 ?
Alice:I hope to be back next Wednesday.
Green : That" s all right. 54
Alice:Thank you, Mr. Green. That" s very kind of you. I will write it immediately.Green : 55
第51题 ________
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