| Design of all the new tools and
implements is based on careful experiments with electronic instruments. First, a
human "guinea pig" is tested using a regular tool. Measurements are taken of the
amount Of work done, and the buildup of heat in the body. Twisted joints and
stretched muscles can not perform as well, it has been found, as joints and
muscles in their normal positions. The same person is then tested again, using a
tool designed according to the suggestions made by Dr. Tichauer. All these tests
have shown the great improvement of the new designs over the old. One of the electronic instruments used by Dr. Tichauer, the myograph (肌动记器), makes visible through electrical signals the work done by human muscle. Another machine measures any dangerous features of tools, thus proving information upon which to base a new des A. a stepladder used to have four legs. B. it is dangerous to use tools C. a tripod is safer in a tool design D. workers are safer on production lines [判断题]显示手信号要做到位置适当，正确及时，横平竖直，灯正圈圆，角度准确，段落清晰。
A.正确 B.错误 [简答题]空预器工作马达和备用马达工作时空预器对应转速是多少？
[多选题]因电能表计量错误或电费计算错误，必须向用户退还或补收电费时就注意以下事项：（ ）。
A.应本着公平合理的原则 B.仔细做好用户工作，以减少国家损失，并维护用户的利益 C.退补电费的处理手续要完备，情况清楚 D.须经各级领导审批后方可处理 [单选题]攀登杆塔过程中应检查（ ）和金具锈蚀情况。
A.A.纵向裂纹 B.B.横向裂纹 C.C.裂纹 D.D.绝缘子污染 [判断题]总行(联社)中心服务器发生故障,系统无法正常运行时,金库、营业网点应调用存储在专用终端中的押运人员身份资料(姓名、照片、工号等信息)进行核对。
A.正确 B.错误 [多选题]下列关于车载炮日常维护的表述中,正确的是( )。2
A.保持炮体清洁,防止生锈与意外损坏。 B.定期检查喷嘴,防止杂物堵塞。 C.对泡沫炮,每次使用完毕后应进行冲洗。 D.对炮座回转定期检查和更换润滑油脂,保持炮体转动灵活。 E.对配有电池的电控式消防炮,应定期检查蓄电池,电容量不足时应及时充电。 [单项选择]消化性溃疡病最常见的并发症是（）
A. 幽门梗阻 B. 穿孔 C. 癌变 D. 出血 E. 反流性食管炎 [判断题]司机、随车机械师(车辆乘务员)、列车长、乘警均应配备无线对讲设备,在GSM-R区段运行时还应配备GSM-R手持终端。( )
A.正确 B.错误 我来回答: 提交
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