更多"A laser beam can be turned into a _"的相关试题:
[单项选择]A laser beam can be turned into a （ ） weapon.
A. dead
B. deathly
C. dying
D. deadly
[单项选择]A Laser beam can be turned into a ______ weapon.
A. deadly
B. dead
C. deadthly
D. deadening
[单项选择]After the use of the laser beam, surgeons can perform operations which ______.
A. leave the patients with negative effects
B. can. treat only human eye disease
C. do little damage to the patients themselves
D. make the patients need a long time to recover
[单项选择]The reason why the laser beam is very strong is that ______.
A. it is artificially illuminated (照亮)
B. it is made up of a concentrated beam of light
C. it sends out heat in all directions
D. its heat is increased by the heat of the sun
[单项选择]A laser beam is used to ______even the hardest substance.
A. light up
B. repair
C. identify
D. penetrate
[单项选择]Laser beams can be used to {{U}}bore{{/U}} metals and other hard materials.
A. trim
B. melt
C. drill
D. slice
[单项选择]A laser can be best described by______.
A. a device for stimulating atoms and molecules to emit light
B. an atom in a high energy state
C. a technique for destroying atom or molecules
D. an instrument for measuring light waves
[单项选择]The beam that is ______by a laser differs in several ways from the light that comes out of a flashlight.
A. emitted
B. transported
C. motivated
D. translated
[单项选择]In English many nouns can be turned into verbs without any change to their form. For instance, the noun walk can be turned into the verb to walk. This phenomenon is known as ______ in morphology.
A. compounding
B. derivation
C. conversion
D. inflection
