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【单选题】
由电阻R=8 Ω和感抗X L =6 Ω串联后,接到220 V的交流电源上,这时的电流为______A,功率因数cosφ等于______。A.
15.7／0.8
B.
22／0.8
C.
15.7／0.6
D.
22／0.6
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【简答题】对MOOC学习成功与否,应由谁来评价?
【简答题】下面的程序完成功能是什么? t=0:pi/50:4*pi; y0=exp(-t/3); y=exp(-t/3).*sin(3*t); plot(t,y,'-r',t,y0,':b',t,-y0,':b') xlabel(‘\bf\it t’); ylabel(‘\bf\it y’); grid on;
【单选题】Which is true of the time for exchanging the pre-appraisal form between the employee and the manager?
A.
At the same time three days before the appraisal interview.
B.
The employee submits it to his / her manager three days earlier
C.
The line manager gives it to the employee three days earlier.
D.
The manager and the employee exchange the form during the appraisal interview.
【单选题】Who is the targeted employee of 360-degree performance appraisal?
A.
Receptionist.
B.
Type-writer.
C.
Secretary.
D.
Sales manager
【多选题】What are the target qualities of an employee in subordinate appraisal?
A.
Communication ability
B.
Administrative ability
C.
Leadership
D.
None
【单选题】298 K时，反应 BaCl2·H2O(s) ＝ BaCl2(s)＋ H2O(g) 达平衡时 P H2O =330 Pa ，则反应的ΔrGmΘ 为
A.
－ 14.3 kJ · mol － 1
B.
＋ 139 kJ · mol － 1
C.
＋ 14.3 kJ · mol － 1
D.
－ 141 kJ · mol － 1
【单选题】Employee appraisal can be regarded as a tool, aiming to influence employee behavior and maximize
A.
the best profits of the company
B.
utilization of the organization’s human resource
C.
the turnover of the employees
D.
the performance of the managers
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