建造一个容积为8立方米,深为2米的长方体无盖水池。如果池底和池壁的造价分别为120元

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问题:

建造一个容积为8立方米,深为2米的长方体无盖水池。如果池底和池壁的造价分别为120元/平米和80元/平米,那么水池的最低总造价是______元。

A.1560

B.1660

C.1760

D.1860

考点:地方公务员行政职业能力测试湖南行政职业能力测验2008年
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两木块自左向右运动,现用高速摄影机在同一底片上多次曝光,记录下木块每次曝光时的位置,如图所示,连续两次曝光的时间间隔是相等的,由图可知(  )

A.在时刻t2以及时刻t5两木块速度相同

B.在时刻t3和时刻t4之间两木块位移相同

C.在时刻t3和时刻t4之间某瞬间两木块速度相同

D.在时刻t4和时刻t5之间某瞬间两木块速度相同

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A transport layer protocol has several responsibilities. One is to create a process-to-process (program-to-program) communication; TCP uses port (71) to accomplish this. Another responsibility of a transport layer protocol is to create a (72) and error-control mechanism at the transport level. TCP uses a sliding (73) protocol to achieve flow control. It uses the acknowledgment packet, time-out, and retransmission to achieve (74) control. The transport layer is also responsible for providing a connection mechanism for the application program. The application program sends (75) of data to the transport layer. It is the responsibility of the transport layer at the sending station to make a connection with the receiver.

A.packet

B.time

C.error

D.phase

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喷燃器油枪进油压力?油流量?

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已知f’(x)=arctan(x-1)2,f(0)=0,则

f(x)dx=______.

题型:单项选择题

船艇主要性能有()

A、浮性

B、储备浮力

C、排水量、吃水

D、稳性、不沉性

E、抗风力、航速、续航力

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