【简答题】WLAN中主要的协议标准有()、()、()等。其中()协议目前居于主导地位。
【单选题】According to the author, the most important character for a good manager is his .
A.
unyielding will to hold out stress
B.
knowing the art of relaxation
C.
high sense of responsibility
D.
having control over performance
【单选题】In most small companies, why does the manager realize the necessity of the HR function in general?
A.
Because he or she is scared by attorneys.
B.
Because he or she has attended a meeting.
C.
Because he or she is the owner or most senior manager.
D.
Because he or she is scared by the complexities of complying with federal and state codes.
【判断题】在一列管换热器中,用饱和水蒸汽冷凝来加热空气,采用并流传热的平均推动力比采用逆流传热的平均推动力小(在两种情况下,两流体的进出口温度分别相同)。(
【单选题】According to the author, the most important character for a good manager is his______.
B.
knowing the art of relaxation
C.
high sense of responsibility
D.
having control over performance
【多选题】在某列管换热器中用饱和水蒸汽在壳程加热管内流动的空气。换热器使用一段时间后发现空气的出口温度比刚使用时明显降低了,如下各项中,哪几项是可能的原因()
【多选题】(多选)在一列管式换热器中,壳程为饱和水蒸气冷凝以加热管程中的空气。若空气流量增大20%,为保证空气出口温度不变,如下各种办法哪几种一般来说是无效的?()*
【判断题】采用错层式空间组合时,常以 踏步 、楼梯 或 室外台阶来解决错层高差。
【多选题】From the venous end to the arterial end heart tube consists of( )