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【单选题】
LED中文名称是________,它是二极管家族中的一员。A.
稳压二极管
B.
发光二极管
C.
光电二极管
D.
光敏二极管
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反馈参考答案：
举一反三
【简答题】选字填空 拌 伴 绊 畔 搅( ) 伙( ) ( )脚 江( )
【简答题】听下面一段对话，回答1-2题。 1. What is the weight of the dictionary? A. One kilo B. Two kilos C. Three kilos 2. When does the man's flight leave? A. At 7∶15 B. At 7∶45 C. At 7∶50
【单选题】A variable represents the weight of a person. What is the level of measurement?
A.
nominal
B.
ordinal
C.
interval
D.
ratio
【单选题】There is wetting sand with weight of 2200g and the water percentage of 5%. What is the weight after its drying? ( )
A.
2100g
B.
1990g
C.
2095g
D.
1910g
【单选题】What is the weight allowance for carry-on bags mentioned in the passage?
A.
5kilos
B.
8kilos
C.
10kilos
D.
18kilos
【简答题】What is the weight, in newtons, of a body of mass 10 kg?
【单选题】A living room has a floor dimensions of 3.5m and 4.2m and a height of 2.4m. What is the weight of the air in the room when the air pressure is 1.0atm? What is the magnitude of the atmosphere’s downwar...
A.
weight = 518 N, F = 4.0x10 3 N
B.
weight = 418 N, F = 4.0 N
C.
weight = 418 N, F = 4.0x10 3 N
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