【单选题】张某接受王某的委托,以王某代理人的身份依法与李某签订了合同。对于该合同的签订,( )。
【单选题】Animal migration is a seasonal or periodic movement of animals in response to changes in climate or food ______, or to ensure reproduction.
【单选题】护士指导患者做超声雾化吸入时,操作中不妥的是
【单选题】Periodic publications notifying changes in,or additions to,previously published navigational data is ________ .
【多选题】关于函数osal_start_timerEx( SampleApp_TaskID, SAMPLEAPP_SEND_PERIODIC_MSG_EVT,SAMPLEAPP_SEND_PERIODIC_MSG_TIMEOUT )的说法,正确的是()。
A.
函数用于开启一个定时器。定时时间为SAMPLEAPP_SEND_PERIODIC_MSG_TIMEOUT
B.
当定时到时,在SampleApp_TaskID任务中设置事件
C.
当定时到时,设置SAMPLEAPP_SEND_PERIODIC_MSG_EV事件
D.
定时器每隔SAMPLEAPP_SEND_PERIODIC_MSG_TIMEOUT周期性开启。
【多选题】If a periodic signal is applied to an LTI system, which are true in the following statements. ( )
A.
The output will be periodic with the same period as the input signal.
B.
The output is not periodic.
C.
Each of the Fourier coefficients of the output is the corresponding Fourier coefficient of input multiplied by a complex number whose value is a function of the frequency corresponding to that Fourier coefficient.
D.
The output will be periodic with the period which is not the same as the input signal
【单选题】Which of the following statements concerning cost formulas in a periodic inventory system is correct?
A.
The results under FIFO in a periodic system are the same as in a perpetual system.
B.
In a periodic system using weighted average, the latest units purchased before each sale are allocated to the cost of goods sold.
C.
In a periodic system using the weighted average cost formula, a new weighted average is calculated after each purchase.
D.
The results under weighted average in a periodic system are the same as in a perpetual system.
【判断题】The ionization potential increase as the atomic numbers of the elements increase in a given periodic group.