停车信号的手信号显示收回时机是列车、调车列减速时。

[问答题]Since moving pictures were invented a century ago, a new way of distributing entertainment to consumers has emerged about once every generation. Each such (1)____(innovate) has changed the industry irreversibly; each has been (2) acco____ by a period of fear mixed with exhilaration. The arrival of digital technology, (3)____ translates music, pictures and text into the zeros and ones of computer language, marks one of those (4) p____.　　This may sound familiar, because the digital revolution, and the explosion of choice that would go with it, has been shown for some time. In 1992, John Malone, chief executive of TCI, an American cable giant, welcomed the “500-channel universe.” Digital television was about to deliver everything (5)____ pizzas to people's living rooms. When the entertainment companies (6)____(try) out the technology, it worked fine-but not at a price that people were prepared to pay.　　Those 500 channels eventually arrived but via the Internet and the PC (7)____ than through television. The digital revolution was starting to affect the entertainment business in (8)____(expect) ways. Eventually it will change every aspect of it, from the way cartoons are made to the way films are screened to the way people buy music. That much is clear. (9)____ nobody is sure of is how it will affect the economics of the business.　　New technologies always contain within them both (10) th____ and opportunities. They have the potential both to make the companies in the business a great deal richer, and to sweep them away. Old companies always fear new technology.

[单选题]道德的评价标准是（）

[单选题]患者，男，14岁，从未进行过预防脊髓灰质炎的免疫接种，在夏季后期患此病住进医院。在病情严重时使用了人工呼吸器，恢复时撤掉人工呼吸器，未出现不良影响，几天后，血气、电解质结果如下：［Na+］136mmol／L，［K+］4．5mmol／L，［Cl-］92mmol／L，pH7．32，CO2总量36mmol／L，PCO270mmHg患者的［HCO-3］（mmol／L）为（）

[单选题]下列选项中不属于民事责任的法律特征的是（）。

[名词解释题]市场观念

[问答题]影响旅游者产生的条件有哪些？

[单选题]刑事自诉状首部当事人的规范称谓是（ ）

[多选题]凭证式国债密码修改后，须提供（）凭证。

[填空题]辛亥革命爆发后，鲁迅作文言小说（），描述了革命军即将到来时各种人物的反应。

[单选题]我国《海商法》第四章中有关承运人义务的规定强制适用于航次租船合同的是（）

[填空题]要求停车的信号叫做禁止信号或停车信号，要求注意或减速运行的信号以及准许按规定速度运行的信号，都叫做（）信号。

[单选题]紧急停车信号（含停车信号）：两手臂高举头上，向（）急剧摇动。

[单选题]紧急停车信号（含停车信号）：两手臂高举头上，向（）急剧摇动。

[填空题]要求停车的信号叫做禁止信号或停车信号，要求注意或减速运行的信号以及准许按规定速度运行的信号，都叫做（）信号。

[填空题]要求停车的信号叫做禁止信号或停车信号，要求注意或减速运行的信号以及准许按规定速度运行的信号，都叫做（）信号。

[填空题]要求停车的信号叫做禁止信号或停车信号，要求注意或减速运行的信号以及准许按规定速度运行的信号，都叫做（）信号。

[填空题]防护中使用的移动信号有停车信号和（）信号。

[填空题]防护中使用的移动信号有停车信号和（）信号。

[单选题]停车信号是什么？（）

[多选题]下列哪些表示停车手信号？（）