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发布时间:2024-05-18 06:40:16

[单项选择]
E-book Price Increase May Stir Readers’ Passions

In the battle over the pricing of electronic books, publishers appear to have won the first round. The price of many new releases and best sellers is about to go up, to as much as $14.99 from $ 9.99.
But there may be an insurgency(暴动)waiting to jump: e-book buyers.
Over the last year, the eagerest readers of e-books have shown a reflexive hostility to prices higher than the $ 9.99 set by online retailers for popular titles.
When digital editions have cost more, or have been delayed until after the release of hardcover versions, these unpleasant readers have organized boycotts at once and gone to the websites to leave one-star ratings and negative comments for those books and their authors.
"This book has been on the shelves for three weeks and is already in the remainder bins," wrote Wayne Fogel of The Villages, Fla., when he left a one-star review of Cathe
A. It would replace other types of reading.
B. It would be more popular than ever.
C. It would depend on the computer industry.
D. It would vary from one nation to another.

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[单项选择]
E-book Price Increase May Stir Readers’ Passions

In the battle over the pricing of electronic books, publishers appear to have won the first round. The price of many new releases and best sellers is about to go up, to as much as $14.99 from $ 9.99.
But there may be an insurgency(暴动)waiting to jump: e-book buyers.
Over the last year, the eagerest readers of e-books have shown a reflexive hostility to prices higher than the $ 9.99 set by online retailers for popular titles.
When digital editions have cost more, or have been delayed until after the release of hardcover versions, these unpleasant readers have organized boycotts at once and gone to the websites to leave one-star ratings and negative comments for those books and their authors.
"This book has been on the shelves for three weeks and is already in the remainder bins," wrote Wayne Fogel of The Villages, Fla., when he left a one-star review of Cathe
A. Limited versions of e-books.
B. More versions of hardcover.
C. Prolonged edition and publishing process.
D. Price increase and delayed release.
[单项选择]Some readers may find it() that a book arguing for greater literacy and intellectual discipline should lead to a call for less rather than more education.
A. appealing
B. controversial
C. paradoxical
D. ambiguous
[单项选择]Some readers may find it () that a book arguing for greater literacy and intellectual discipline should lead to a call for less rather than more education.
A. appealing
B. controversial
C. paradoxical
D. ambiguous
[填空题]When tour operators lower their price, they may ______.
[单项选择]STIR代表()
A. 恢复的安全时间
B. 反转恢复时间
C. 脉冲序列中的弛豫时间
D. 短TI反转恢复序列
E. 长TI反转恢复序列
[多项选择]STIR序列的特点包括
A. 有效控制脂肪的信号
B. 采用短的TI
C. 第一个脉冲为180°脉冲
D. 减少运动伪影、化学位移伪影
E. 增加增强扫描的效果
[单项选择]STIR技术优点在于()
A. 信呈抑制的选择性较高
B. 由于TR缩短,扫描时间较短
C. 场强依赖性低,对磁场均匀度的要求也较低
D. 用于增强扫描可增加强化效果
E. 小的FOV扫描可取得好的脂肪抑制效果
[单项选择]STIR技术的优点在于()
A. 信号抑制的选择性较高
B. 由于TR缩短,扫描时间较短
C. 场强依赖性低,对磁场均匀度的要求也较低
D. 用于增强扫描可增加强化效果
E. 小的FOV扫描可取得好的脂肪抑制效果
[单项选择]STIR技术的特点是()
A. 信号抑制的选择性高
B. 扫描时间短
C. 适用于增强扫描
D. 大FOV扫描也能获得良好的脂肪抑制效果
E. 对场强的依赖性很高
[多项选择]STIR序列的优点是()
A. 属于脂肪抑制技术
B. 场强依赖性低,低场设备脂肪抑制效果好
C. 对磁场均匀度要求低
D. 大FOV扫描效果好
E. 信号抑制的特异性高

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