两秒规则的作用是确保驾驶员在不同速度下保持与前车的安全距离。该规则的原理是选择前方固定参考物,当车辆通过该点时开始计时,若在2秒内到达同一位置,则跟车距离不足。无论车速快慢,时间固定,因此适应不同速度下的距离调整。选项A正确描述了其用途,其他选项未提供,但题目完整且答案明确。因此答案为A。反馈 收藏
The spatial profile is modeled by the sum (green) of two Moffat profiles, corresponding to the quasar (blue) and the companion galaxy (red). The error bars indicate the standard deviation of the collapsed flux, while the colored stripes represent the 0.683 credible interval of the models. ...
First announced in April, 2016, the tax which applies to soft drinks containing more than 5g of sugar per 100ml, was introduced to help reduce childhood obesity (肥胖). It is believed that today’s children and teenagers are consuming th...
The Overdub feature clones your voice so you can enter a sentence or two without re-recording the whole thing. You can't enter entirely new paragraphs without anyone noticing—the change in tone and inflection is a bit too obvious—but if it's a phrase or two that you need to edit, ...
life. USB-C took the guesswork out of connectivity, thanks to its reversible design. That, in addition to the high-speed data transfer, fast charge capabilities, and audio-video output, all through a single cable, has made USB-C a trusty companion as we move towards the future of ...
例2:There is no rule that has no exception.只要有规则,就有例外。 四.被动语态的翻译技巧。 1.被动仍翻成被动。 2.英语被动翻成汉语主动。如: 例1:This city was built many years ago and it is now inhabited by none. 这座城市是许多年前建成的,而现在无人居住。 3.借助译成‘是...的',...
So, why don’t the two beavers ever collide? Since they move at the same speed, neither of them can rear-end the other, so what we’re really asking is, why won’t there ever be a head-on collision? It’s possible to imagine that, with enough patience or cleverness or pure dumb...
Router Two chooses the path to Network A by examination of the hop count through each available path. Figure 1 Since the path through Router Three is three hops, and the path through Router One is two hops, Router Two chooses the path through One and discards the information it learn...
the table and write down all your ideas (on actual paper).3It’s important to do this in person and to make absolutely sure you don’t have any negative energy or feedback throughout the process. You may end up with 100 horrible ideas, but I bet you’ll have one or two good ones...
Consequently, we analyze the TCOC information, the perceived risk, and the interaction of the two in a buyer-seller relationship. 2.2. Development of hypotheses TCOC information. The overall costs of BEVs are currently not completely transparent to buyers, which can lead to economically ...