One reason human beings can thrive in
all kinds of climates is that they can control the qualities of the air in the
enclosed spaces in which they live. Air conditioning is the use of mechanical
systems to {{U}} (31) {{/U}} that control in such places {{U}} (32)
{{/U}} homes, offices, theaters, institutions, factories, airplanes, and
automobiles. The most familiar type of air conditioning is summertime cooling.,
Although important, this is {{U}} (33) {{/U}} one of several aspects of
air conditioning. Other applications {{U}} (34) {{/U}} the control of the
humidity (or air moisture), cleanliness, circulation of the air, and
heating. Tests have {{U}} (35) {{/U}} that people generally feel best {{U}} (36) {{/U}} certain temperature, humidity, and air velocity conditions. Temperatures can {{U}} (37) {{/U}} from 21.5°C with 70 percent rel A. ensures B. ensure C. ensuring D. to ensure [判断题]严禁易燃易爆装卸车区域未按要求穿防静电工作服
A.正确 B.错误 [判断题]超高吊装作业可以不设旁站监护人员。
A.正确 B.错误 [判断题]对存在振动的设备,一些部件的连接方式采用焊接等新工艺代替铆接工艺。采用此工艺的目的在于减振( )
A.正确 B.错误 [单选题]表示设置/修改H代码的磨损补偿量的是()。
A.G10 L10 P_R_ B.G10 L11 P_R_ C.G10 L12 P_R_ D.G10 L13P_R_ [多选题]为确保高速公路运输安全,某地公安机关开展对危险化学品运输车辆的安全大检查。下列行为中应当由公安机关依法处罚的有()
A.通过道路运输危险化学品,不配备押运人员; B.危险化学品运输车辆未悬挂或者喷涂警示标志; C.危险化学品运输车辆悬挂或者喷涂的警示标志不符合国家标准要求; D.危险化学品运输的驾驶人员、押运人员未取得从业资格上岗作业 [单项选择]孔径加工实际尺寸与设计理想尺寸符合程度属加工精度中()。
A. 尺寸精度 B. 几何形状 C. 相对位置 D. 平行 [判断题]凡动通信设备的施工作业,包括光电缆的更换,GSM-R机柜的更换等,必须经段调度批准。
A.正确 B.错误 我来回答: 提交
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