【简答题】When I was a child, my family 1 a road trip every summer. We 2 from our home in New York City to my grandmother’s home in Missouri. The 1580-kilometer trip 3 two or three days. I always thou...
【简答题】Look! This is my family photo. In this photo, My father was 35 years old. He was a policeman. My mother was a teacher. She was 32 years old. Her hair is long. My sister was a cute baby. She was about ...
【简答题】Hello! My name is John. 1 members (成员) are in my family: my parents, my sister and I. My 2 is Frank, and he is 39. 3 phone number is 360-9821. My mother’s name is Susan, and 4 is 37. My sister is a ni...
【简答题】The school begins on _______. 2. My sister will travel to France on_____. 3. We'll take the test on _______. 4. On ____, the store will have a big sale. 5. Can you send me an email by ________? 6. You...
【多选题】电气防爆的基本措施包括( )
A.
按有关电力设备接地设计技术规程规定的一般情况不需要接地的部分,在爆炸危险区域内仍不需要接地
B.
设置漏电火灾报警和紧急断电装置。在电气设备可能出现故障之前,采取相应补救措施或自动切断爆炸危险区域电源
C.
采用防爆的电气设备。在满足工艺生产及安全的前提下,应减少防爆电气设备的数量。一般采用携带式电气设备
D.
宜将正常运行时产生火花、电弧和危险温度的电气设备和线路,布置在爆炸危险性较小或没有爆炸危险的环境内。电气线路的设计、施工应根据爆炸危险环境物质特性,选择相应的敷设方式、导线材质、配线技术、连接方式和密封隔断措施等
E.
散发较空气重的可燃气体、可燃蒸气的甲类厂房以及有粉尘、纤维爆炸危险的乙类厂房,应采用不发火花的地面。采用绝缘材料作整体面层时,应采取防静电措施。散发可燃粉尘、纤维的厂房内表面应平整、光滑,并易于清扫
【单选题】My sister and I_________our bicycles to the park.
【简答题】O n the Road W hen I was a child, my family 1 a road trip every summer. We 2 from our home in New Yor k City to my grandmother ’ s home in Missouri. T he 1580-kilometer trip 3 two or three days. I alw...