不同的数控系统，各个地址字及编程规则应（）。_数控机床操作工考试_全学科试题题库

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不同的数控系统，各个地址字及编程规则应（）。
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以下说法正确的是（）

A Bridge for Squirrels San Francisco has its cable cars. Seattle has its Space Needle. And， Longview has its squirrel bridge. The bridge， which has attracted international attention， is now a local landmark. The Nutty Narrows Bridge was built in 1963 by a local builder， Amos Peters， to give squirrels a way to cross the busy road without getting flattened by passing cars. The original bridge was built over Olympia Way on the west edge of the library grounds. Before the bridge was built， squirrels had to avoid traffic to and from the Park Plaza office building where office staff put out a nutty feast for the squirrels. Many times， Peters and others who worked in and near Park Plaza witnessed squirrels being run over. One day Peters found a dead squirrel with a nut still in its mouth， and that day's coffee break discussion turned into squirrel safety. The group of businessmen cooked up the squirrel bridge idea and formed a committee to ask the blessing of the City Council （市政会）.The Council approved， and Councilwoman Bess LaRiviere jokingly named the bridge "Nutty Narrows". After architects designed the bridge， Amos Peters and Bill Hutch started construction. They built the 60-foot bridge from aluminum and lengths of fire hose （消防水带）. It cost 1000. It didn't take long before reports of squirrels using the bridge started. Squirrels were even seen guiding their young and teaching them the ropes. The story was picked up by the media， and Nutty Narrows became known in newspapers all over the world. In 1983， after 20 years of use， Peters took down the worn-out bridge. Repairs were made and crosspieces were replaced. The faded sign was repainted and in July 1983， hundreds of animal lovers attended the completion ceremony of the new bridge. Peters died in 1984 ，and a ten-foot wooden squirrel sculpture was placed near the bridge in memory of its builder and his devotion to the project. What can we learn about Amos Peters？（）

PV=RT描述了（）的变化规律。

以下关于混凝土的养护说法正确的是（）

现有IP地址为202.125.39.129，从其主机地址中借4位以划分子网：①该IP地址属于()类IP地址。②该子网的IP前缀是()。③该IP地址的网络地址是()。

既能疏散风热，又能清热解毒的药物是：（）。

下列情形中，生产者不承担产品缺陷损害赔偿责任的有（）。

机械如在llOkV高压线下进行工作或通过时，其最高点与高压线之间的最小垂直距离不得小于（）m。

（）是把外在的社会道德规范要求转化为医务人员的内在的自身医德信念，是医学伦理学的最终归宿。

密闭式循环系统中，通常设置管道过滤器，（）或蒸发空冷器。