【单选题】Which of the following are meaningful criteria for measuring the effectiveness of an appraisal scheme? (i) Serious intent (ii) Fairness (iii) Efficiency (iv) Co-operation (v) Results
A.
(ii), (iii) and (v) only
C.
(i), (ii), (iii) and (iv) only
D.
(i), (ii), (iii), (iv) and (v)
【单选题】一名调皮的学生屡次扰乱课堂,教师请其站到教室后面,教师运用了
【单选题】_____ the end of the day, the science teacher was very happy.
【判断题】III类电动工具,其额定电压不超过50V。( )
【单选题】下列排序不正确的是
A.
沸点I 2 > Br 2 > Cl 2 > F 2
B.
氧化性F 2 > Cl 2 > Br 2 > I 2
C.
热稳定性HF > HCl > HI > HBr
【单选题】一名调皮的学生屡次扰乱课堂,教师请其站在教室的后面,教师运用了
【单选题】Reporters often express concern about pressure from ____________.
【单选题】下列物质的性质比较中,错误的是
A.
熔沸点:F 2 <Cl 2 <Br 2 <I 2
B.
颜色:F 2 、Cl 2 、Br 2 、I 2 逐渐加深
C.
还原性: F ― >Cl ― >Br ― >I ―
【单选题】随着核电荷数的递增,氧化性逐渐减弱的一组是 [ ]
【单选题】一名调皮的学生屡次扰乱课堂,教师请其站到教室后面,教师运用了: