【单选题】执行语句序列 int n;cin >> n; switch(n--) { case 1: case 2: cout << '1' ; case 3: case 4: cout << '2' ; break; default: cout << '3' ;时,若键盘输入1,则屏幕显示( )。
【判断题】将万用表置于 R × 1k 挡,测量红外发光二极管的正、反向电阻,通常,正向电阻应该在 30 k Ω 左右,反向电阻要在 500 k Ω 以上。
【多选题】按照生命周期理论,( )时期为工作时期。
【判断题】The picture response technique is a projective technique in which the respondent is shown a picture and asked to tell a story describing it.
【单选题】执行语句序列 int n; cin >> n; switch(n) { case 1: case 2: cout << '1' ; case 3: case 4: cout << '2' ; break; default: cout << '3' ; } 时,若键盘输入1,则屏幕显示( )
【单选题】Which technique is used to resolve the different sizes of DNA fragments following a restriction enzyme digest
【判断题】寒冷空气刺激是诱发慢性支气管炎的原因之一。
【单选题】According to the passage, which technique is NOT used by advertisers to get our attention?
A.
A product may be filmed or photographed to make it appear better.
B.
A product may be presented as 'unique', 'supreme'.
C.
A product may claim to he 'new' or 'improved'.
D.
A product may be sold at a discount.
【单选题】主张“从做中学”,对教育产生深远影响的人是