为了探究电流与电压电阻的关系,小明将实物连接成如图所示。 (1)请你指出甲图中连

题型:实验题

问题:

为了探究电流与电压电阻的关系,小明将实物连接成如图所示。

(1)请你指出甲图中连接的错误之处: A_______________________;B_______________________;

C_______________________。

(2)请你将正确的电路图画在方框内。

考点:探究电流与电压、电阻的关系电路图及元件符号
题型:实验题

动画片的配音用慢录快放把成年人的声音变成了小孩的声音,这样加快了喇叭纸盒振动的            ,使          变高.

题型:实验题

返潮

题型:实验题

Virtualization is an approach to IT that pools and shares (71) so that utilization is optimized and supplies automatically meet demand. Traditional IT environments are often silos, where both technology and human (72) are aligned around an application or business function. With a virtualized (73) , people, processes, and technology are focused on meeting service levels, (74) is allocated dynamically, resources are optimized, and the entire infrastructure is simplified and flexible. We offer a broad spectrum of virtualization (75) that allows customers to choose the most appropriate path and optimization focus for their IT infrastructure resources.

(71)是()

A.advantages

B.resources

C.benefits

D.precedents

题型:实验题

电动机电刷与刷握内壁应保持()的游隙.

题型:实验题

一定温度下,下列溶液的离子浓度关系式正确的是()

A.pH=5的H2S溶液中,c(H+)=c(HS-)=1×10-5mol·L-1

B.pH=a的氨水溶液,稀释10倍后,其pH=b,则a=b+1

C.pH=2的H2C2O2C2O4溶液与pH=12的NaOH溶液任意比例混合:c(Na+)+c(H+)=c(OH-)+c(HC2O4-

D.pH相同的①CH3COONa②NaHCO3③NaCIO三种溶液的c(Na+):①>②>③

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