| A report consistently brought back by
visitors to the 13. S. is how friendly, courteous, and helpful most Americans
were to them. To be fair, this observation is also frequently made of Canada and
Canadians, and should best be considered North American. There are, of course,
exceptions. Smallminded officials, rude waiters, and ill-mannered taxi drivers
are hardly unknown in the U. S. Yet it is an observation made so frequently that
it deserves comment. For a long period of time and in many parts of the country, a traveler was a welcome break in an otherwise dull existence. Dullness and loneliness were common problems of the families who generally lived distant from one another. Strangers and travelers were welcome sources of diversion, and brought news of the outside world. The harsh realities of A. Americans are more friendly than their Can adian neighbors B. small-minded officials are under sever criticism C. rude waiters and ill-mannered taxi drivers are hardly seen in the U. S. D. most Americans are polite and ready for help [单选题]某商店对洗衣液进行降价促销，每瓶洗衣液降低 3 元出售，结果顾客增加了一半，销售额 增加了三分之一。 该洗衣液原价是：
A.24 元 B.26 元 C.27 元 D.29 元 [判断题]泵的线性尺寸几何相似地均放大一倍时，对应工况点的流量、扬程、轴功率将各增到原来的8倍、4倍和16倍。
[判断题]-A-001 4 1 3
尺寸界线用细实线绘制,并应由图形轮廓线、轴线或对称中心线处引出,也可利用轮廓线、轴线或对称中心线作尺寸界线。 [T/] A.正确 B.错误 [简答题]境内外币支付系统参与者借方清算净额之和与贷方清算净额之和相等（以下简称试算平衡）的，外币清算处理中心应如何处理?
[单项选择]基金绩效贡献分析的目的在于（）。
A. 衡量基准组合收益率 B. 衡量基金收益率 C. 分析基金收益率和基准组合收益率之间差别的原因 D. 衡量基金绩效表现优劣 [不定项选择题]患者男，65岁，吸烟30年。1周来反复发作胸痛，与体力活动有关，休息可以缓解。6小时前出现持续性疼痛，进行性加剧，伴气促，不能平卧。查体：神志清楚，BP90/65mmHg，HR120次/分，律齐，心尖部可及3级收缩期杂音，双肺可闻及干鸣音及湿啰音。CK-MB601U/L。
除冠心病外下列常可引起心绞痛的疾病是
A.肺动脉瓣狭窄 B.主动脉瓣狭窄 C.多发性大动脉炎 D.肥厚型心肌病 E.扩张型心肌病 F.风湿性心脏病 G.感染性心内膜炎 [单选题]电客车退行模式限速( ）。
A.3km/h B.10km/h C.25km/h D.35km/h [单选题] 非紧急情况区间乘客疏散指列车在区间发生车辆、线路、供电等设备故障时，预计在40分钟内无法动车，OCC请示事业部领导后组织区间疏散。(1.0分)
A.对 B.错 [单项选择]下列标识符中哪个是不合法的 ( )
A. BigMeaninglessName B. $ int C. 1st D. $1 [单选题]BA051 柴油机超速安全装置的作用转速，（ ）
A.出厂时没有调整好 B.使用时应注意调整 C.在后盖处铭牌上有标志 D.出厂时调整好、使用中仍需调整 [填空题]凸轮借助于（）迫使从动件作相应的运动。
[简答题]NBA历史上著名的“奥本山宫事件”中的奥本山宫是哪支NBA球队的主场？
[单项选择]先天性巨结肠的常见X线征象是（）
A. 近端结肠扩张而远端无狭窄段 B. 近端结肠狭窄，远端结肠扩张，并伴有功能障碍 C. 远端结肠狭窄，近端结肠扩张，并伴有功能障碍 D. 结肠病变区无钡剂潴留现象 E. 结肠仅有功能障碍 我来回答: 提交
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