The strain energy stored in a body, when suddenly loaded, is ( )
A: equal to
B: one-half
C: twice
D: four times
A: equal to
B: one-half
C: twice
D: four times
举一反三
- When an animal consumes more energy than it needs, the excess energy is mainly stored in the body in the form of fat.
- We go to the movies ______ a month. A: once or twice B: one or two times C: two or three time D: three and four times
- How many times of “return” should be hit when starting a new paragraph in business letter? A: three times B: twice C: once D: four times
- 1) What happens to the magnitude of the magnetic field inside a long solenoid if the current is doubled? A: It becomes four times larger. B: It becomes twice as large. C: It is unchanged. D: It becomes one-half as large. E: It becomes one-fourth as large.
- Which of the following is not one of the ways fats are useful in the body? A: fats are the body’s chief form of stored energy B: fats form the major material of cell membranes C: fats can provide energy to neuron D: fats can protect vital organs