流量是指（）A、单位时间内流过管道某一截面的流体数量 B、单位时间内流过某一段管道的

查一查，记一记，并释义。

1．千军易得，一将难求。  

     军：___________ 将：______________

     这句话的意思是__________________________________________________________

2．多行不义必自毙。

     必：___________ 毙：______________

     这句话的意思是__________________________________________________________  

3．人之忌，在好为人师。    

      忌：_____________    

      好：读hǎo，组词(    )；读hào，组词(    )。在本句应读(  )。

     这句话的意思是__________________________________________________________

一只油桶的体积是l50dm³，那么这个油桶盛油与150L相比[ ]

A．大于    

B．小于    

C．等于    

D．无法确定

关于非处方药叙述不正确的是（）

A.是指不需要处方即可购买的药物

B.一般在药店即可买到

C.当消费者按照标签上的指示服用药物时，非处方药物的活性成分被认为是安全有效的

D.处方中的药物不可以包括非处方药物

E.药剂师可以向患者推荐适宜的非处方药物，并解释它们的用法

71.Vacations were once the prerogative of the privileged few, even as late as the 19th century. Now they are considered the right of all, except for such unfotrunate masses as, for example, the bulk of puplation in certain countries, for whom life, save for sleep and brief periods of rest, is uniterrupted toil.
Vacations are more necessary now than before because today the average life is less well-rounded and has become increasingly compartmentalized. 72. I suppose the idea of vacations, as we conceive it, must be incomprehensible to primitive peoples. Rest of some kind has of course always been a part of the rhythm of human life, but earlier ages did not find it necessary to organize it in the way that modern man has done. Holidays and feast days were sufficient.
With modern man’s increasing tensions, with the stultifying quality of so much of his work, this break in the year’s routine became steadily more necessary. 73. Vacations became mandatory for the purpose of renewal and repair. And so it came about that in the United States, the most self-indulgent of nations, the most tense and compartmentalized, vacations have come to take a predominant place in domestic conversation.

煤气管道进行组装焊接时，管径≥（）毫米须采用双面焊接。

A.600

B.700

C.800

D.900