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【多选题】
DNA复制的精确性远高于RNA的合成,这是因为( )。
A.
新合成的DNA链与模板链形成了双螺旋结构，而RNA链不能
B.
DNA聚合酶有3'→ 5'外切酶活力，而RNA聚合酶无相应活力
C.
脱氧核苷酸之间的氢键配对精确性高于脱氧核苷酸与核苷酸之间的配对
D.
DNA聚合酶有5’→ 3’外切酶活力，RNA聚合酶无此活性
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【单选题】万用表可以用来测量电流、电压、电阻等,也可以检测各种装置的电器故障,比如 : 检测熔丝,测量墙上插座的电压值,检测房顶上的天线,查明墙上的开关是否有了毛病,并完成许多其他家用电器的检修工作。
A.
With a multimeter, we can measure current, voltage ， resistance, etc. And we can also trouble-shoot appliances, test fuses, measure voltage at a wall outlet, check the wires from your roof antenna, find out whether a wall switch is broken, and perform dozens of other household jobs*. In troubleshooting, voltage can be measured while the set is on, and resistance can be measured while the set is off.
B.
With a multimeter, we can measure current, voltage ， resistance, etc. And we can also trouble-shoot appliances, test fuses, measure voltage at a wall outlet, In troubleshooting, voltage can be measured while the set is on, and resistance can be measured while the set is off.
C.
With a multimeter, we can measure current, voltage ， resistance, etc. And we can also trouble-shoot appliances, test fuses, measure voltage at a wall outlet, check the wires from your roof antenna, find out whether a wall switch is broken, and perform dozens of other household jobs
D.
With a multimeter, we can measure current, voltage ， resistance, etc. And we can also trouble-shoot appliances, test fuses, measure voltage at a wall outlet, check the wires from your roof antenna, find out whether a wall switch is broken, You get clues to the location of the trouble by comparing your multimeter readings with the normal values given in service manuals.
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【简答题】康复工程技术产品的评估包括( )、( )、( )。
查看完整题目与答案
【判断题】进行力量练习时,在选择练习肌群及练习形式方面要有针对性。
A.
正确
B.
错误
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【单选题】世界上第一部大哥大手机售价50000元，如今一部全新大哥大手机的市场报价仅一百多元，造成这种巨大价值落差的原因是（ ）。
A.
功能性损耗
B.
折旧
C.
供给增加
D.
通货膨胀
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【判断题】会议主席一般都会有蓝帽子思维
A.
正确
B.
错误
查看完整题目与答案
【单选题】第一台计算机是哪一年诞生?
A.
1985
B.
1881
C.
1964
D.
1995
查看完整题目与答案
【单选题】一质点沿x轴作简谐振动,振动表式为x1=0.5cos(2πt+π/3) (SI制)。从t=0时起,到质点到达负的最大位移处的最短时间为
A.
1s
B.
1/3 s
C.
1/2s
D.
2/3s
查看完整题目与答案
【单选题】第一部大哥大手机售价50000元，如今一部全新大哥大手机仅报价一百多元，造成这种巨大的价值落差的原因是（ ）。
A.
功能性损耗
B.
折旧
C.
供给增加
D.
通货膨胀
查看完整题目与答案
【单选题】We can trouble shoot appliances with a multimeter except ________.
A.
testing fuses
B.
measuring voltage in a wall outlet
C.
checking the wires of an antenna
D.
performing all of other testing jobs
查看完整题目与答案
【单选题】一质点沿 x 轴作简谐振动,振动表式为 x 1 =0.5cos(2πt+ π /3) (SI 制 ) 。从 t=0 时起,到质点到达负的最大位移处的最短时间为
A.
1/2 s
B.
1/3 s
C.
1/4 s
D.
1/6 s
查看完整题目与答案
相关题目：
【单选题】万用表可以用来测量电流、电压、电阻等,也可以检测各种装置的电器故障,比如 : 检测熔丝,测量墙上插座的电压值,检测房顶上的天线,查明墙上的开关是否有了毛病,并完成许多其他家用电器的检修工作。
A.
With a multimeter, we can measure current, voltage ， resistance, etc. And we can also trouble-shoot appliances, test fuses, measure voltage at a wall outlet, check the wires from your roof antenna, find out whether a wall switch is broken, and perform dozens of other household jobs*. In troubleshooting, voltage can be measured while the set is on, and resistance can be measured while the set is off.
B.
With a multimeter, we can measure current, voltage ， resistance, etc. And we can also trouble-shoot appliances, test fuses, measure voltage at a wall outlet, In troubleshooting, voltage can be measured while the set is on, and resistance can be measured while the set is off.
C.
With a multimeter, we can measure current, voltage ， resistance, etc. And we can also trouble-shoot appliances, test fuses, measure voltage at a wall outlet, check the wires from your roof antenna, find out whether a wall switch is broken, and perform dozens of other household jobs
D.
With a multimeter, we can measure current, voltage ， resistance, etc. And we can also trouble-shoot appliances, test fuses, measure voltage at a wall outlet, check the wires from your roof antenna, find out whether a wall switch is broken, You get clues to the location of the trouble by comparing your multimeter readings with the normal values given in service manuals.
查看完整题目与答案
【简答题】康复工程技术产品的评估包括( )、( )、( )。
查看完整题目与答案
【判断题】进行力量练习时,在选择练习肌群及练习形式方面要有针对性。
A.
正确
B.
错误
查看完整题目与答案
【单选题】世界上第一部大哥大手机售价50000元，如今一部全新大哥大手机的市场报价仅一百多元，造成这种巨大价值落差的原因是（ ）。
A.
功能性损耗
B.
折旧
C.
供给增加
D.
通货膨胀
查看完整题目与答案
【判断题】会议主席一般都会有蓝帽子思维
A.
正确
B.
错误
查看完整题目与答案
【单选题】第一台计算机是哪一年诞生?
A.
1985
B.
1881
C.
1964
D.
1995
查看完整题目与答案
【单选题】一质点沿x轴作简谐振动,振动表式为x1=0.5cos(2πt+π/3) (SI制)。从t=0时起,到质点到达负的最大位移处的最短时间为
A.
1s
B.
1/3 s
C.
1/2s
D.
2/3s
查看完整题目与答案
【单选题】第一部大哥大手机售价50000元，如今一部全新大哥大手机仅报价一百多元，造成这种巨大的价值落差的原因是（ ）。
A.
功能性损耗
B.
折旧
C.
供给增加
D.
通货膨胀
查看完整题目与答案
【单选题】We can trouble shoot appliances with a multimeter except ________.
A.
testing fuses
B.
measuring voltage in a wall outlet
C.
checking the wires of an antenna
D.
performing all of other testing jobs
查看完整题目与答案
【单选题】一质点沿 x 轴作简谐振动,振动表式为 x 1 =0.5cos(2πt+ π /3) (SI 制 ) 。从 t=0 时起,到质点到达负的最大位移处的最短时间为
A.
1/2 s
B.
1/3 s
C.
1/4 s
D.
1/6 s
查看完整题目与答案