中国大学MOOC: The Aerochute is easy to control: you _______ it by pulling handles on the left and right.
举一反三
- The Aerochute is easy to control: you _______ it by pulling handles on the left and right. A: climb B: steer C: / D: /
- The Aerochute is easy to control: you _______ it by pulling handles on the left and right. A: climb B: steer C: / D: /
- In the given situation, which one of the instructions is correct?The left handle has to be turned to the right, and then the right handle has to be turned to the left. A: Turn the handles left and right B: Turn the left handle to the right, then turn the right handle to the left C: Turn both handles in the opposite directions D: Turn the left handle to the left, then turn the right handle to the right
- 函数$z=\arcsin\dfrac{1}{~\sqrt{x+y}~}$的定义域为( ) A: $\left\{(x,y)\left|~x+y\geq<br/>0\right.\right\}$; B: $\left\{(x,y)\left|~x+y\geq<br/>1~\text{或}~x+y\leq<br/>-1 \right.\right\}$; C: $\left\{(x,y)\left|~x+y\geq<br/>1\right.\right\}$; D: $\left\{(x,y)\left|~x+y\geq<br/>\dfrac{4}{~\pi^2~}\right.\right\}$．
- \(\left\{ {\left( {x,y} \right)\left| {2 \le {x^2} + {y^2} \le 4} \right.} \right\}\)是闭区域.