下列不是锌缺乏的原因
A.摄入不足B.吸收障碍C.需要量增加D.丢失过多E.急性失血
参考答案:E
词汇运用
1.He left the city,________(决心) never to come back.
2.What he said was very ________(有说服力的) and at last we all accepted his idea.
3.Yesterday he ________(录制) this song by Liu Huan,using his ________(录音机).
4.Choose three places to visit and find out the oneway fare to get there for different kinds of _____
(交通方式).
5.We are all looking froward to the World Cup ________(决赛).
6.He said he had ________(做梦) a terrible ________(梦) the night before.
7.He ________(坚持) that we should set out at 7.
8.The dying man is ________(呼吸) with great difficulty.
9.I had many interesting ________(经历) while travelling in Africa.
10.Now all the teenagers are ________(熟悉) with the Super Girls.
有一居民小区,由于近几年用电负荷增长较快,经常造成楼内主干线路接头烧断,经过物业公司协调,决定对楼房内主干线路更换为16mm<sup>2</sup>多股铜线,需要进行导线连接。
下图所示是()导线连接方法。
A、绞接法
B、绑接法
C、插接法
D、压接法