#77天演讲转身挑战 Day 5: How do you feel about working from home during the pandemic? 02:19 每日即兴英文演讲 - In a car crash, do nothing to let 5 people die or kill one person 04:22 每日即兴英文演讲A car is out of control. Do nothing, then 5 people die. Or sacrifice 03:01...
M: ___ How many planes fly across the Atlantic every day? W: I have no idea. Hundreds, I suppose. M: And how often do you hear of crash? Once or twice a year? W: Yes, but ___. M: Look, there are more people killed in the road accidents everyday than in air crashes...
M: __3.___ How many planes fly across the Atlantic every day? W: I have no idea. Hundreds, I suppose. M: And how often do you hear of crash? Once or twice a year? W: Yes, but _4.___. M: Look, there are more people killed in the road accidents everyday than in air ...
Many larger prop-driven aircraft boast propellers with adjustable pitch mechanisms. These mechanisms let the pilot adjust the propeller's angle of attack depending on air speed and altitude. There are, of course, variations. For example, in turbo prop planes, a gas turbine spins the propeller, ...
If you have ever seen a World War II bomber like the B-25 or the B-17, or if you have ever seen or been on an old commercial airplane like a DC-3, then you are familiar with something called a radial engine. Many planes of the WWII era used very large, very powerful radial...
Many larger prop-driven aircraft boast propellers with adjustable pitch mechanisms. These mechanisms let the pilot adjust the propeller's angle of attack depending on air speed and altitude. There are, of course, variations. For example, in turbo prop planes, a gas turbine spins the propeller, ...
Because of this, many stories describe some kind of__10__. This is one reason why so much news seems to be _11___. After all (毕竟), newspapers never print stories about planes landing __12__, but they do print stories about planes which crash ...
If a boat has a 2-inch hole a foot below the waterline, nearly 80 gallons of water can pour in per minute. Once that same hole is 3 feet down, the flow can increase to more than 135 gallons per minute [source: boatus.org]. Many boats sink because the pump they have can't get...
However, I've flown the drone from the surface of the deck many times, and this was the first time that this happened. Given that the drone is only a few weeks old, and lost control without my input resulting in an unrecoverable crash, do you think DJI would be prepared to replace ...
Turbulenceis nothing more than wonky wind currents that cause planes to bobble a bit, not at all unlike driving on a bumpy road or sailing on a choppy sea. But seriously, there's no need to worry — planes are specifically designed to handle and minimize turbulence. ...