按欧曼产品功能分类下列不属于自卸车客户信息网络类别的是（） A.渣土车 B.矿坑车

水工建筑物按其用途分为一般性建筑物和专门性建筑物，专门性水工建筑物不包括（）。

A．过鱼建筑物

B．水电站建筑物

C．溢洪道建筑物

D．给水排水建筑物

20世纪科学技术的发展，为人们提供了可以观察和操纵单个原子和分子的可能性，从而实现了直接用原子来制造分子．葡萄糖是人体需要的重要的营养物质之一，其化学式为C₆H₁₂O₆，若采用上述方法制造葡萄糖，请你指出所需的原子名称：______．

所给处的图、表、文字或综合性资料均有若干个问题要你回答。你应根据资料提供的信息进行分析、比较、计算和判断处理。
根据下表回答下面问题

在财政科技拨款中，科技三项费比科研基建费高出( )亿元

A．545.4

B．595.6

C．645.5

D．659.6

The usual way to ensure reliable delivery is to provide the (71) with some feedback about what is happening at the other end of the line. Typically, the protocol calls for the receiver to send back special (72) frame bearing positive or negative (73) about the incoming frames. If the sender receives a positive acknowledgement about a frame, it knows the the frame has arrived safely. On the other hand, a negative acknowledgement means that something has gone wrong, and the frame must be transmitted again.
An additional complication comes from the possibility that hardware troubles may cause a frame to (74) completely. In this case, the receiver will not react at all, since it has no any reason to react. It should be clear that a protocol in which the sender transmits a frame and then waits for an acknowledgement, positive or negative, will hang forever if a frame is ever lost due to, for example, (75) hardwareo

A．data

B．control

C．request

D．session

（）是钱塘江潮水最大的日子。

A、三月初八

B、三月十八

C、八月初八

D、八月十八