Emerge预扩球囊的头端外径是（）

A . A.2cm B . B.2.5cm C . C.3～4cm D . D.4cm以上 E . E.以上均可

A . 2cm B . 2.5cm C . 3～4cm D . 5cm以上 E . 以上均可

A . 正确 B . 错误

A . A．2cm B . B．2.5cm C . C．3～4cm D . D．4cm以上 E . E．以上均可

A . 耐磨 B . 增强 C . 柔软 D . 方向

A . 正确 B . 错误

A . 正确 B . 错误

A . 正确 B . 错误

是 否

According to a new report by Forrester Research, e-commerce sales are【C1】______. to grow 11% , to ＄ 156 billion, in 2009. That【C2】______a slowdown from 13% growth last year and 18% in 2007. The major factor【C3】______to the pace shift is, of course,【C4】______consumer confidence. But e-commerce's slowed pace is, still【C5】______better than the National Retail Federation's【C6】______0.5% drop in overall retail sales this year. That means e-commerce is stealing market share from【C7】______retail -- and fast. By Forrester's estimates, in 2008 e-commerce【C8】______for 5% of all retail sales. In 2012, Forrester thinks ecommerce could have an 8%【C9】______. One recent factor is that online shopping promises bargains to price-sensitive consumers. 'The recession is definitely【C10】______more consumers to do their homework【C11】______they go and complete a purchase, ' says Forrester analyst Sucharita Mulpuru. E-commerce is also【C12】______protected because online shoppers tend to be wealthier: about half of all online shopping is done by households that earn more than ＄ 75,000 per year,【C13】______though they're just about a【C14】______of all households with Internet access. 【C15】______not all Internet companies are set to benefit equally. Last month, e-commerce【C16】______eBay posted its first-ever quarterly revenue decline,【C17】______Amazon reported a sales surge of 18%.Smaller players are particularly【C18】______risk. 'There are some pretty vicious wars as companies go online and duke it out to get market share,' says Mulpuru. 'The【C19】______I have is that we could go back down the spiral of death from 1999 and 2000, when companies would under-price themselves without thinking about【C20】______. 【C1】 A．hardly B．likely C．centainly D．seemly

A．1/3 B．1/2 C．2/3 D．3/4

A．1.2mm和1.5mm的球囊 B．1.2mm 和2.0mm的球囊 C．1.5mm和2.0mm的球囊 D．merge球囊均存在这种推送杆选择

A．0.010 B．0.050 C．0.020 D．0

A．更长的头端提高了柔顺性，使得通过性更佳。同时提高了导丝跟踪能力，在通过侧枝血管或支架网眼时更具优势 B．Radius头端设计提高对导丝的跟踪性，圆滑的头端边缘减少头端卡在支架杆上的几率，更利于穿过支架网眼，采用更柔软材料，使得跟踪性提高同时兼顾柔韧性 C．高亮黄色头端和血液形成对比色，提高辨识度 D．从导丝腔到头端采用一体化设计，使整体平滑过渡，拥有更顺畅的通过性 此题为多项选择题。

A．头端外径：0.0165，是市场上最小头端通过外径梯队之一 B．头端长度4mm，完美平衡通过性和跟踪性，易于穿支架网眼，提升在复杂病变中的通过性 C．无缝平滑的锥形设计能够改善球囊通过病变的能力 D．多层树脂结构设计，将头端的柔顺性和抗折性实现完美平衡 E．远端打磨成微圆形，加强球囊在分叉和CTO病变中的通过性

A．1.3mm B．1.45mm C．1.65mm D．1.8mm

A．锡林 B．顶梳 C．钳板 D．罗拉