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PLC通电前的检查,首先确认输入电源电压和。()
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参考答案:
举一反三
【判断题】肾上腺素为αβ受体剂。
A.
正确
B.
错误
【简答题】生石灰按照煅烧程度不同可分为欠火石灰、( )和正火石灰。
【单选题】生石灰按照煅烧程度不同可分为欠火石灰、 ( ) 和正火石灰。
A.
过火石灰
B.
石灰石
C.
石灰膏
D.
石灰乳
【单选题】实轴上根轨迹右端的开环实数零点、极点的个数之和为( )
A.
B.
大于零
C.
奇数
D.
偶数
【单选题】要求启动快的大型给水泵,宜采用自灌充水。非自灌充水水泵的引水时间,不宜超过() min 。
A.
5
B.
6
C.
3
D.
2
【单选题】()灭火器主要用来扑灭油类、可燃液体和可燃固体的初起火灾。
A.
二氧化碳
B.
干粉
C.
泡沫
D.
1211
【多选题】第二节:信息匹配(共5小题;每小题2分,满分10分) 阅读下列应用文及相关信息,并按照要求匹配信息。请在答题卡上将对应题号的相应选项字母涂黑。 注意:如选E,请在答题卡上填涂AB;如选F,请填涂CD 首先阅读以下寻物启事
A.
Scott; I lost a brown leather wallet near a bus stop on March 11th. Reward offered for return. There is a driving license (执照) and some cash in it. If you have found it, please call me at 08966881717. Thank you.
B.
Kate: I lost my camera in Prague in July in a street. All my holiday pictures were in it. It was a silver Samsung. Please contact me if you’ve found it. Call 07919896989. Thanks.
C.
Nancy: My cat went missing today --- she is an indoor cat, with gray short hair. She had on a pink collar with her nam e--- Maddy. If you’ve found it, send email to nacy@tdsounds. co.uk. Thanks.
D.
Amelia: My boyfriend lost his laptop(手提电脑) yesterday near the library. It was in a black bag with some books and CDs inside. It’s an old Dell model. Please help me to find it. Call 02077513465. Thank you. E.  Steve:My lovely wife lost 3 books in Chateau early Friday night. The title of one of the books is Butterflies of Sri Lanka and it is important to my wife. If anyone has found them, please send email to steve@.com.. Thanks. F.  Rebecca: I lost my mobile a week ago. I want the messages in the phone. Please return it. Just leave it at the reception desk of peace Hotel. Thanks a lot. 阅读以下人员的信息,然后选择与他们相关的寻物启事: 46.  I found this when I was wandering in a street. There are many pictures in it and they’re surely records of wonderful memories. Hope the owner can get it back as soon as possible. 47.  When I found this cellphone, I was in a hurry and just put it in my bag, but that was a week ago .I’m sorry I forgot about it, as I’ve been too busy these days. Hope the owner will get it back soon. 4 8.  Why are some people always so careless? Thousands of things have been left since I came to work at this bus stop. No matter how much money is in it, this wallet may be important to its owner. 49.  I found this bag under a tree when I got out of the reading room. It feels like a computer or something like that. It must be valuable to its owner. Hope it can be returned to the owner soon. 50.  I found this poor animal in the street, and it looked like it couldn’t find its way home. Well, it was dangerous for it to be there due to the heavy traffic. So I took it home and hope that I can return it to the owner.
【单选题】采用拟除虫菊酯处理居民蚊账不适用于消灭下列哪种蚊虫:( )
A.
大劣按蚊
B.
微小按蚊
C.
中华按蚊
D.
嗜人按蚊
E.
白纹伊蚊
【单选题】直肠检查母牛发情时,操作人员的站位应在( )。
A.
侧后方
B.
正后方
C.
左侧
D.
三者均可
【判断题】实轴上根轨迹右端的开环实数零点、极点的个数之和为奇数
A.
正确
B.
错误
相关题目:
【多选题】第二节:信息匹配(共5小题;每小题2分,满分10分) 阅读下列应用文及相关信息,并按照要求匹配信息。请在答题卡上将对应题号的相应选项字母涂黑。 注意:如选E,请在答题卡上填涂AB;如选F,请填涂CD 首先阅读以下寻物启事
A.
Scott; I lost a brown leather wallet near a bus stop on March 11th. Reward offered for return. There is a driving license (执照) and some cash in it. If you have found it, please call me at 08966881717. Thank you.
B.
Kate: I lost my camera in Prague in July in a street. All my holiday pictures were in it. It was a silver Samsung. Please contact me if you’ve found it. Call 07919896989. Thanks.
C.
Nancy: My cat went missing today --- she is an indoor cat, with gray short hair. She had on a pink collar with her nam e--- Maddy. If you’ve found it, send email to nacy@tdsounds. co.uk. Thanks.
D.
Amelia: My boyfriend lost his laptop(手提电脑) yesterday near the library. It was in a black bag with some books and CDs inside. It’s an old Dell model. Please help me to find it. Call 02077513465. Thank you. E.  Steve:My lovely wife lost 3 books in Chateau early Friday night. The title of one of the books is Butterflies of Sri Lanka and it is important to my wife. If anyone has found them, please send email to steve@.com.. Thanks. F.  Rebecca: I lost my mobile a week ago. I want the messages in the phone. Please return it. Just leave it at the reception desk of peace Hotel. Thanks a lot. 阅读以下人员的信息,然后选择与他们相关的寻物启事: 46.  I found this when I was wandering in a street. There are many pictures in it and they’re surely records of wonderful memories. Hope the owner can get it back as soon as possible. 47.  When I found this cellphone, I was in a hurry and just put it in my bag, but that was a week ago .I’m sorry I forgot about it, as I’ve been too busy these days. Hope the owner will get it back soon. 4 8.  Why are some people always so careless? Thousands of things have been left since I came to work at this bus stop. No matter how much money is in it, this wallet may be important to its owner. 49.  I found this bag under a tree when I got out of the reading room. It feels like a computer or something like that. It must be valuable to its owner. Hope it can be returned to the owner soon. 50.  I found this poor animal in the street, and it looked like it couldn’t find its way home. Well, it was dangerous for it to be there due to the heavy traffic. So I took it home and hope that I can return it to the owner.
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