皮皮学，免费搜题
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搜题
【单选题】
为防止爆炸的发生，通风系统设计时采用的防爆措施不正确的是（）
A.
排除有爆炸危险物质的局部排风系统，其风量应按在正常运行和事故情况下，风管内这些物质浓度不大于爆炸下限的50％计算
B.
防止可燃物在通风系统的局部地点（设备、管道或个别死角）积聚
C.
排除、输送有燃烧或爆炸危险混合物的通风设备和风管，均应采取防静电接地措施（包括法兰跨接），且不应采用容易积聚静电的绝缘材料制作
D.
用于净化爆炸性粉尘的除尘器和过滤器应布置在风机的排出段
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举一反三
【判断题】功能、意念、交际场合、社会地位、语体等因素属于语言能力。
A.
正确
B.
错误
查看完整题目与答案
【单选题】窗框的外围尺寸，应按洞口尺寸的宽高方向各缩小( )mm。
A.
15
B.
20
C.
25
D.
30
查看完整题目与答案
【单选题】Questions 18 -21 are based on the following dialogue on sports. What are the man’s hobbies?
A.
Running and thinking.
B.
Running and jumping.
C.
Running and climbing.
D.
Running and skiing.
查看完整题目与答案
【单选题】Questions 14 -17 are based on the following dialogue on traveling. What is Ms. Bush’s main purpose for the trip?
A.
Sightseeing in Australia and the Far East.
B.
Visiting a friend in Cairo.
C.
Attending a conference in Sydney.
D.
Shopping in Hong Kong.
查看完整题目与答案
【简答题】Questions 18～21 are based on the following dialogue on a reading list. What is Helen's major? [A] Children' s Literature. [B] American Literature. [C] Medicine. [D] Elementary Education.
查看完整题目与答案
【判断题】功能、意念、交际场合、社会地位、语体等因素属于语言学能力。
A.
正确
B.
错误
查看完整题目与答案
【单选题】窗框的外围尺寸，应按洞口尺寸的宽高方向各缩小（）mm。
A.
15
B.
20
C.
25
D.
10
查看完整题目与答案
【简答题】Act out the 2nd dialogue on page 21 and the 2nd dialogue on page 25 with your partner and upload the video of your performance on the platform here.
查看完整题目与答案
【简答题】Questions 18～21 are based on the following dialogue on sports. What are the man's hobbies? [A] Running and thinking. [B] Running and jumping. [C] Running and climbing. [D] Running and skiing.
查看完整题目与答案
【简答题】Questions 14～17 are based on the following dialogue on traveling. What is Ms. Bush's main purpose for the trip? [A] Sightseeing in Australia and the Far East. [B] Visiting a friend in Cairo. [C] Atten...
查看完整题目与答案
相关题目：
【判断题】功能、意念、交际场合、社会地位、语体等因素属于语言能力。
A.
正确
B.
错误
查看完整题目与答案
【单选题】窗框的外围尺寸，应按洞口尺寸的宽高方向各缩小( )mm。
A.
15
B.
20
C.
25
D.
30
查看完整题目与答案
【单选题】Questions 18 -21 are based on the following dialogue on sports. What are the man’s hobbies?
A.
Running and thinking.
B.
Running and jumping.
C.
Running and climbing.
D.
Running and skiing.
查看完整题目与答案
【单选题】Questions 14 -17 are based on the following dialogue on traveling. What is Ms. Bush’s main purpose for the trip?
A.
Sightseeing in Australia and the Far East.
B.
Visiting a friend in Cairo.
C.
Attending a conference in Sydney.
D.
Shopping in Hong Kong.
查看完整题目与答案
【简答题】Questions 18～21 are based on the following dialogue on a reading list. What is Helen's major? [A] Children' s Literature. [B] American Literature. [C] Medicine. [D] Elementary Education.
查看完整题目与答案
【判断题】功能、意念、交际场合、社会地位、语体等因素属于语言学能力。
A.
正确
B.
错误
查看完整题目与答案
【单选题】窗框的外围尺寸，应按洞口尺寸的宽高方向各缩小（）mm。
A.
15
B.
20
C.
25
D.
10
查看完整题目与答案
【简答题】Act out the 2nd dialogue on page 21 and the 2nd dialogue on page 25 with your partner and upload the video of your performance on the platform here.
查看完整题目与答案
【简答题】Questions 18～21 are based on the following dialogue on sports. What are the man's hobbies? [A] Running and thinking. [B] Running and jumping. [C] Running and climbing. [D] Running and skiing.
查看完整题目与答案
【简答题】Questions 14～17 are based on the following dialogue on traveling. What is Ms. Bush's main purpose for the trip? [A] Sightseeing in Australia and the Far East. [B] Visiting a friend in Cairo. [C] Atten...
查看完整题目与答案