本课配套习题挑战模式2/5
单选题
难度系数:
2.调节好的天平移到另一个桌面上( )
A: 需要重新调节 |
B: 无需调节 |
C: 可调可不调 |
D: 可以在测量的过程中调节 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOaooeajseS4pOWPr+eahOetlOahiOiCr+WumuS4jeWvuQ==
- 提示2:IOahjOmdouW5tuS4jeS4gOWumuaYr+WujOWFqOawtOW5s+eahOWTpg==
- 提示3:IOWPquimgeaNouWcsOaWue+8jOmDveimgemHjeaWsOiwg+iKgg==
- 答案:QQ==
PGRpdj7lpKnlubPlnKjkvb/nlKjov4fnqIvlvZPkuK3npoHmraLosIPoioLonrrmr43vvIzlnKjkvb/nlKjml7bvvIzlpoLmnpzosIPmlbTlubPooaHlkI7ph43mlrDmlL7lnKjlhbbku5blnLDmlrnpnIDopoHph43mlrDosIPmlbTlubPooaHjgII8L2Rpdj4=
本课配套习题挑战模式3/5
单选题
难度系数:
3.调节天平横梁平衡时,若天平左盘下沉,调节时应该( )
A: 调节横梁右端平衡螺母,使它向左移 |
B: 调节横梁右端平衡螺母,使它向右移 |
C: 调节游码位置,使之向标尺左移 |
D: 调节游码位置,使之向标尺右移 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOWcqOiwg+iKguW5s+ihoeaXtu+8jOmAmui/h+W5s+ihoeieuuavjeiwg+iKguW5s+ihoeOAgg==
- 提示2:IOWcqOiwg+iKguW5s+ihoeaXtu+8jOa4uOeggeimgeW9kumbtuOAgg==
- 提示3:IOW5s+ihoeieuuavjeiwg+iKguaWueWQkeWSjOS4i+ayieaWueWQkeebuOWPjeOAgg==
- 答案:Qg==
PGRpdj7lpKnlubPnmoTosIPoioLljp/liJnvvJrlt6blgY/lj7PosIPvvIzlj7PlgY/lt6bosIPvvIzlhYjlv6vlkI7mhaIuIDwvZGl2PjxkaXY+5bem55uY5LiL5rKJ77yM5oyH6ZKI5bem5YGP77yM5bqU5Y+z6LCDLiA8L2Rpdj4=
本课配套习题挑战模式4/5
单选题
难度系数:
4.用托盘天平称量10g某物质时,如果天平指针偏向左,则需要( )
A: 添加砝码 |
B: 取下砝码 |
C: 减少称量物 |
D: 增加称量物 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOW3pueJqeWPs+egge+8jOensOmHj+eJueWumui0qOmHj+eJqei0qO+8jOmcgOWFiOWKoOegneegge+8jOWGjeaUvueJqeWTgeOAgg==
- 提示2:IOmAmui/h+WinuWKoOeJqei0qO+8jOaYr+WkqeW5s+i+vuWIsOW5s+ihoQ==
- 提示3:IOaMh+mSiOWQkeW3puWBj++8jOivtOaYjueJqei0qOWkmuS6hu+8jOmcgOimgeWHj+WwkeensOmHj+eJqQ==
- 答案:Qw==
PGRpdj7nlKjmiZjnm5jlpKnlubPnp7Dph48xMGfoja/lk4HvvIzmraXpqqTlupTor6XmmK/vvJrosIPoioLlpKnlubPlubPooaHvvIzlhYjlkJHlj7PovrnmiZjnm5jmt7vliqAxMGfnoJ3noIHvvIznhLblkI7lkJHlt6bovrnmiZjnm5jmt7vliqDoja/lk4HvvIznm7Toh7PlpKnlubPlubPooaHvvJs8L2Rpdj4=
本课配套习题挑战模式5/5
单选题
难度系数:
5.小明同学用已调好的天平测量一块鹅卵石的质量,当在天平右盘上放置一定的砝码后,发现此时天平虽然不平衡,但通过增减砝码的方法,无法使天平平衡. 则此时要想使天平平衡,应采取的操作是( )
A: 若横梁左端下沉,应用镊子向右拨动游码 |
B: 若横梁右端下沉,应用镊子向右拨动游码 |
C: 若横梁左端下沉,应向右旋动平衡螺母 |
D: 若横梁右端下沉,应将横梁右端的螺母向右旋动 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOWkqeW5s+W5s+ihoeWQjuWcqOensOmHj+i/h+eoi+S4re+8jOemgeatouiwg+iKguW5s+ihoeieuuavjQ==
- 提示2:IOaXoOazlemAmui/h+egneeggeiwg+W5s+eahOaXtuWAmeWPr+S7peeUqOa4uOeggeiwg+W5sw==
- 提示3:IOa4uOeggeWQkeWPs+aLqOWKqO+8jOebuOW9k+S6juWcqOWPs+ebmOWKoOegneeggQ==
- 答案:QQ==
PGRpdj7np7Dph4/ov4fnqIvkuK3vvIzlpoLmnpzpgJrov4flop7lh4/noJ3noIHml6Dms5Xkvb/mnaDmnYblubPooaHml7bvvIzlupTnp7vliqjmuLjnoIHmnaXkvb/lhbblubPooaHvvIzlubbkuJTopoHlkJHmqKrmooHkuIvmsonnmoTlr7nkvqfmnaXnp7vliqguIOWboOatpO+8jOWPquaciemAiemhuUHnrKblkIjpopjmhI88L2Rpdj4=