【单选题】在下列各项中,属于道德意识现象的是()。
【判断题】二极管具有单向导电性,三极管具有双向导电性。
【单选题】在下列各项中,属于道德意识现象的是()。
【多选题】When do people do small talk?
A.
While waiting for a bus
B.
When they meet a good friend on the street
C.
When they meet a colleague in the lift
D.
When they are having a meeting
【简答题】二极管之所以具有单向导电性,是因为其内部有一个具有单向导电性的 。
【单选题】When will people say a short prayer before they eat?
A.
People pray whenever they eat.
B.
Most people will pray when they eat at home.
C.
People will usually pray before they eat dinner.
【单选题】标准贯入试验使用的穿心锤重和锤落距分别是( )