电泵机组投入正常运行后,要注意更换(),投产前或各种原因停机时应随时进行电流记录仪()校正,以便以保证记录的准确性。
参考答案:电流卡片;零位
根据课文内容及汉语提示填空。
Anne was a girl, whose family was Jewish. During the Second World War, they hid away l._______
(为了) not to be caught by the German Nazis. She was cut off from the outside world, so she started her
diary and 2._______ (记下) her feelings, her fears, her hopes as well as her nightmare experiences. She
made it her best friend.
She hadn't been 3._______ (在户外) and seen nature 4. _______ (面对面)for so long that she was
5. ________ (狂热) everything, such as the dark rainy night, the wind, the 6._______ (thunder)clouds
and so on.
It isn't the first time that I 7._______ (read) her diary. It was 8._______ (直到……才) I had read it
for the third time 9. _______(连接词) I began to really understand what Anne 10. _______ (经历) during
that period.
支配心脏的交感神经末梢释放的递质是()
A.肾上腺素
B.去甲肾上腺素
C.多巴胺
D.氨基丁酸
E.乙酰胆碱