发出存货成本的确定方法，主要包括( )。 A．个别计价法 B．先进先出法 C．后进

小明在做“测量小灯泡电功率”的实验中，所用器材有额定电压为2．5V的小灯泡，以及符合实验要求的电源、滑动变阻器、电表、开关和导线。实验前电压表和电流表已调零，实验时用导线a、b、c、d、e、f、g按图示方式连接电路。

(1)闭合开关前应把滑动变阻器滑片P调到       (选 填“A”或“B”)端。

(2)闭合开关，调节滑动变阻器，结果出现了下列现象，请分析其原因：

a．小灯泡不亮，电压表的示数始终为3V，电流表的示数始终为零，则可能是导线     

出现断路；

b．小灯泡能发光，电流表有示数，电压表的示数始终为零，则可能是导线      出现断路。

(3)小明排除故障后，调节滑动变阻器，测得表中的三组数据。则小灯泡的额定功率为    W。

（4）小明利用表格中的数据又计算了灯泡的电阻，发现灯丝的电阻是变化的，其原因是：

某工程双代号网络计划如下图所示，其关键线路有（）条。

A．1

B．2

C．3

D．4

《职业病防治法》规定，存在职业危害的生产经营单位应当对职业危害因素的监测周期为（）

A.经常性

B.每月

C.每季度

左侧继发性三叉神经痛，除m现左面部痛觉减退外，尚有的体征为

A．左角膜反射消失，下颌向右偏斜

B．左角膜反射存在，下颌向右偏斜

C．左角膜反射消失，下颌无偏斜

D．左角膜反射消失，下颌向左偏斜

E．左角膜反射存在，下颌无偏斜

Do you have trouble remembering people’s names
Then maybe this is for you. When you worry about re-
membering people’s names and rack your mind when
you run down someone whose name you can’t remem- 62.______
ber, you’re probably only making matters better. What 63. ______
happens when you do that, is that your energy is diver-
ted to nervous energy that actually makes it more diffi-
cult with recall information. 64. ______
You may also have some bad habits that contribute
to your problem. Do you feel defensive when you meet
new people Are you absent-minded when listen to peo- 65. ______
ple telling you their names And do you try to remember66. ______
the names of every people you meet through the course
of the day and end up forgetting important ones while
remembering relevant ones Any of these factors could 67. ______
be interrupting your mind’s natural ability to retain
names.
What should you do then, in those occasions when68. ______
you meet new people Don’t bother repeating the name
over in your head. That only leads to anxiety. The best
thing to do is to enforce your memory by using a variety 69. ______
of senses to aid in memorization. The best thing to do is
to write the person’s name down after you have a chance
to be by yourself. The visual image of the name written
on paper combined with the memory of the person’s face
and the action of writing the name can reinforce the
partial pathways that create mental retention: The addi- 70. ______
tional sensory information will make it easier to recall
names and you’ll be more anxious when you meet people. 71. ______