1分钟内通过某电阻的电量为120库，电流做的功是1440焦，则通过该电阻的电流强

两位同学用如图所示的装置测量重力加速度。

(1)测量中一位同学有如下步骤：

A．用米尺测量出悬线的长度l，并将它记为摆长；

B．用天平测量出摆球的质量m；

C．使单摆小角度摆动后，用秒表记录全振动n次的时间，并计算出摆动周期T。

以上步骤中不正确的是____，不必要的是___（填写步骤前字母）。

(2)另一位同学测量了不同摆长(L)情况下单摆的振动周期(T)，并做出T²-L图线，然后计算出图线的斜率k，这位同学根据图线求出重力加速度的计算公式为g=___。

19世纪中期，造成俄国资本主义发展缓慢的主要原因是[ ]

A．俄国农业发达，农民富有，不愿从事工业生产

B．国家分裂，未形成统一的市场

C．外族入侵，无暇顾及本国资本主义的发展

D．农奴制的存在，是阻碍俄国资本主义发展的主要原因

医务人员应该尊重、同情、关心、救助服务对象，这是（）的要求。

A.人道原则

B.重生原则

C.自主原则

D.保密原则

In recent years, one of the more popular topics for panel discussions at computer conferences and trade (61) has been the "RISC versus CISC" debate.
RISC processors feature a small number of instructions that each executes in (62) machine cycle. CISC processors use complex instructions that can take several cycles to execute.
The RISC versus CISC debate won’t be decided by panel discussion; it will be won in the marketplace. And the deciding factor may have little to do with (63) of instructions and registers and more to do with parallelism.
Since their conception, RISC processors have been evolving toward micro parallelism, incorporating parallel-processing features (64) the processor, RISC processors feature pipelining, whereby many instructions can be decoded while one instruction executes. RISC processors, however, are moving toward pipelines for each unit of the processor.
CISC processors also employ pipelining. They have many integer instructions that execute in one cycle, but the varying execution times of CISC instructions (65) the effectiveness of parallelism.

A．union

B．two

C．numbers

D．between

E．limit

F．contents

G．shows

H．one

I．within

J．enhance

《建设工程质量管理条例》明确规定，在正常使用条件下，给排水管道工程最低保修期限为( )。

A．2年
B．3年
C．4年
D．5年