三类精度的水文站流速仪法单次流量测验允许的系统误差为（）。A_爱下问搜题

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问题单项选择题

三类精度的水文站流速仪法单次流量测验允许的系统误差为（）。

A、-1%～1%

B、-2%～1%

C、-2.5%～1%

D、-1%～2%

答案

参考答案：C

单项选择题

暂列金额是指招标人在工程量清单中暂列并包括在合同价款中的款项，在工程量清单中应列入()。

A.措施项目清单

B.分部分项工程量清单

C.规费项目清单

D.其他项目清单

单项选择题

35．Applications put computers to pratical business (1) , but below the (2) it’s the heart of an operating system—the kernel that provides the technical wizardry to juggle multiple program, connect to networks and store (3) . A traditional kernal provides all the functions for applications. The kemal (4) memory, I/O devices and parcels out processor time.
The kernel also supports security and fault (5) , which is the ablity to recover automatically when parts of the system fail.

(3)

A．graphics

B．data

C．text

D．image