【多选题】购买和食用保健品,应注意如下哪几项( )
A.
不要相信“疗效”、“速效”的字样,保健品不是药品
【简答题】《钢规》5.1.2条第4款,给出了等边角钢绕平行轴稳定时的换算长细比计算公式,即公式(5.1.2-8α),但是,在该条的"注"又指出,对于单面连接的单角钢轴心受压构件,按3.4.2条考虑折减系数后可不考虑弯扭效应。二者似乎矛盾,如何理解?
【判断题】4对于宽度、深度不大,以及精度要求不高的槽可采用与槽等宽的刀具直接切入一次完成加工。A. 对 B. 错
【简答题】How many of Priscilla's brothers or sisters have received college education?
【单选题】It is impossible to find out exactly how many volunteers are at work today in the United States. Thirty-seven million or so are known to belong to organizations like the Pink Ladies, Travelers' Aid, o...
A.
the exact number of volunteers in America is difficult to find out
B.
there are thirty-seven million volunteers at work in the United States
C.
American Red Cross counts about 1,140,000 volunteers with a large budget
D.
the total number of volunteers in America ranges from fifty to sixty-eight million
【单选题】Read the paragraph from the section "The Scent Master At Work." Ryan calls himself the "scent master." His creations are some of the best-sellers. He mixes two or three scents together at a time. Then...
A.
How does Ryan create new candle scents?
B.
How many types of candles do the brothers sell?
C.
How did Ryan learn how to make candles?
D.
How many candles does Ryan make each month?
【单选题】下列不属于中小企业采用紧缩型战略的原因的是()
C.
宏观经济衰退,或者通货膨胀严重,政府紧缩银根
D.
企业决策出现重大失误,或新产品开发失败,财务上遇到严重困难
【判断题】在三相四线制供电系统中,为确保安全,中性线和火线上必须装设开关或熔断器。
【判断题】根据INCOTERMS 2010,对于进口方而言,采用材"EXW loaded+卖方工厂/仓库"成交与采用"FCA十卖方工厂/仓库"的风险和责任一样。
【单选题】在三相四线制中性点不接地的供电系统中,为了保护人身安全,把设备正常不带电的金属外壳,经过专门设置的接地极进行接地,这种措施叫做( )。