未知题型 阿里巴巴国际站和环球资源都是中国主流的国际B2B平台，但阿里巴巴与其不同之处在于阿里巴巴国际站的目标客户定位于（）。
单项选择题 中压或高压气力输送系统多采用 。真空或低压气力输送系统常采用 。 一般适合处理粘性物料。在一定程度上可将 看作是间歇供料器。 A、旋转叶片供料器、螺旋供料器、双翻板阀供料器、容积式供料器 B、螺旋供料器、双翻板阀供料器、容积式供料器、旋转叶片供料器 C、容积式供料器、旋转叶片供料器、螺旋供料器、双翻板阀供料器 D、双翻板阀供料器、容积式供料器、旋转叶片供料器、螺旋供料器
未知题型 The diversity of wild chimps' behaviors suggests that there are distinct ape cultures.A.YB.NC.NG
未知题型 以下哪项是跨境电商企业的特点（）。
未知题型 听力原文： Penury was what people called a mystery man. We had known him for over seven years, ever since he became a member of our modest club, but he had a way of keeping his private life to himself in all but the unessential details. We knew his address, though he never invited us to his home, and his age, too, but only unimportant matters of this kinD.It seemed that he did not have to work for a living as we did, in our various ways. He had once hinted about an inheritance on which he managed to live comfortably. He was not, however, a man of luxurious habits: he was not especially well dressed and he did not even have a car. At the age of forty-five he was still a bachelor though. Since marriage was not a subject he ever discussed, we had no means of finding out whether he regretted not having a wifE.Penury disappeared suddenly from our circle and shortly afterwards we came to learn the first really solid facts about our mystery man. From reports that appeared in the newspapers, together with photographs of the man who was without doubt, our Mr. Penury, it was revealed that he was the most accomplished burglar in the London area; and that he had practiced this profession for many years, until he was arrested and sent to prison.(23)A.Because nobody knew his address.B.Because nobody knew his agE.C.Because Penury's private life was a secret.D.Because Penury was still a bachelor at the age of forty-fivE.
未知题型 交易磋商包括（）等环节。
单项选择题 以下哪项护理不利于预防肺部并发症A. 保持呼吸道通畅B. 疼痛时用吗啡止痛C. 鼓励深呼吸和有效咳嗽D. 协助病人翻身、拍背E. 应用抗生素
未知题型 亚马逊网站中所谓的“TopReviewers”指的是：
未知题型 What does 'in-flight service' (Line 1, Para, 5) mean?A.Service on the planE.B.A new safety devicE.C.Flights within one country.D.Charge-free air servicE.
未知题型 （）是阿里巴巴旗下推出不久的集信息服务、物流和付款于一体的、小额国际在线批发和零售商务平台。