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【单选题】
有一 40W 的荧光灯，使用时灯管与镇流器(灯管看作纯电阻，镇流器看作纯电感)串联在电压为 220V ，频率为 50Hz 的电源上，灯管两端的电压等于 110V ，电路的功率因数等于 （    ）。
A.
0.5;
B.
0.6;
C.
0.7;
D.
0.8;
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【简答题】请翻译: G: Could you tell me where the restroom is? S: It's around the corner over there, you can be go straight along the corridor. The restaurant is on your right. G: Thanks a lot. S: You're welcome.
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【单选题】- Excuse me, can you tell me the way to the subway station? - Just go straight on untill you see the subway station ahead of you. you can't _____ it.
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【多选题】消防控制室管理与值班应满足以下()规定
A.
实行每日24h专人值班制度，每班不少于2人，值班人员持有规定的消防专业技能鉴定证书。
B.
消防设施日常维护管理符合国家标准《建筑消防设施的维护管理》GB25201的相关规定。
C.
确保火灾自动报警系统、固定灭火系统和其他联动控制设备处于正常工作状态，不得将应处于自动控制状态的设备设臵在手动控制状态。
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【单选题】It can be concluded from the passage that______.
A.
there is a simple way of finding out if someone is lying
B.
from some ways people behave we can know they are lying
C.
certain emotions are proof of lying
D.
in some situations women are most likely to think businessmen are dishonest
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【单选题】消防控制室的值班人员每班不应少于2人，每班连续工作时间不宜超过()。
A.
6小时
B.
8小时
C.
10小时
D.
12小时
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【单选题】It can be concluded from the passage that ______ .
A.
there is a simple way of finding out if someone is lying
B.
from the way some people behave we can tell they are lying
C.
certain emotions are proof of lying
D.
in some situations women are most likely to think businessmen are dishonest
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【单选题】按照《消防控制室通用技术要求》的规定，消防控制室值班人员每班不应少于（）人。
A.
1
B.
2
C.
3
D.
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【简答题】从下列5个选项中选择正确的句子填空。 Mr Williams Excuse me, ____1_____ Hualian Department Store in Changyang Road, please? Young man Yes, of course. ____2________ that big Shanghai Bank over there. Mr Williams Let me r...
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相关题目：
【简答题】请翻译: G: Could you tell me where the restroom is? S: It's around the corner over there, you can be go straight along the corridor. The restaurant is on your right. G: Thanks a lot. S: You're welcome.
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【简答题】Mr Williams Excuse me, can you tell me ( 1 ) Hualian Department Store in Changyang Road, please? Young man Yes, of course. Go straight on past that big Shanghai Bank over there. Mr Williams Let me ( 2...
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【多选题】消防控制室管理与值班应满足以下()规定
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实行每日24h专人值班制度，每班不少于2人，值班人员持有规定的消防专业技能鉴定证书。
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C.
确保火灾自动报警系统、固定灭火系统和其他联动控制设备处于正常工作状态，不得将应处于自动控制状态的设备设臵在手动控制状态。
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确保高位消防水箱、消防水池、气压水罐等消防储水设施水量充足，确保消防泵出水管阀门、自动喷水灭火系统管道上的阀门常开;确保消防水泵、防排烟风机、防火卷帘等消防用电设备的配电柜控制装臵处于自动控制位臵(或者通电状态)。
查看完整题目与答案
【单选题】It can be concluded from the passage that______.
A.
there is a simple way of finding out if someone is lying
B.
from some ways people behave we can know they are lying
C.
certain emotions are proof of lying
D.
in some situations women are most likely to think businessmen are dishonest
查看完整题目与答案
【单选题】消防控制室的值班人员每班不应少于2人，每班连续工作时间不宜超过()。
A.
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B.
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C.
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D.
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【单选题】It can be concluded from the passage that ______ .
A.
there is a simple way of finding out if someone is lying
B.
from the way some people behave we can tell they are lying
C.
certain emotions are proof of lying
D.
in some situations women are most likely to think businessmen are dishonest
查看完整题目与答案
【单选题】按照《消防控制室通用技术要求》的规定，消防控制室值班人员每班不应少于（）人。
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C.
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【简答题】从下列5个选项中选择正确的句子填空。 Mr Williams Excuse me, ____1_____ Hualian Department Store in Changyang Road, please? Young man Yes, of course. ____2________ that big Shanghai Bank over there. Mr Williams Let me r...
查看完整题目与答案