皮皮学，免费搜题
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【单选题】
在每个防护区各自设置气体灭火系统保护的系统，称为_____。A.
全淹没气体灭火系统
B.
局部应用气体灭火系统
C.
单元独立气体灭火系统
D.
组合分配气体灭火系统
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】在色散型红外分光光度计中,样品是放在 ________ 和 ________之间进行测定。
A.
光源和单色器
B.
光源和检测器
C.
单色器和检测器
D.
检测器和数据处理器
【简答题】请将东京比京都热闹翻译成日语。
【单选题】— do you fly to Japan to see your son? —Once a year. [ ]
A.
How long
B.
When
C.
How many
D.
How often
【单选题】— do you go to see a film? —Twice a month. [ ]
A.
How far
B.
How soon
C.
How long
D.
How often
【简答题】---How often do you see your grandparents? ---________. A Five days B. Once a month C. In a week
【单选题】—_______ do you go to see your grandparents? —Once a week. [ ]
A.
How long
B.
How often
C.
How many
【单选题】— _____ do you see your grandparents? — Once a month. [ ]
A.
How long
B.
How soon
C.
How much
D.
How often
【单选题】Whatkind of luggage does the guest have?
A.
Theguest has a small blue suitcase.
B.
Theguest has a big black suitcase.
C.
Theguest has a roll aboard and a suitcase.
D.
Theguest has two suitcases altogether.
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