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【单选题】
听力原文:Jane: Well, what do you feel after the first haft of this concert? I do hope you are enjoying it. Jack: Well, I am really amazed. Fantastic, marvelous music! The dancing was so vigorous and there is such enthusiasm. Jane: Yes, this is the thing about a lot of our music and the accompanying dance. Jack: I was so excited. It almost made me want to jump on the stage and dance, as well. It was absolutely stunning and I thought that girl singer was very beautiful. But, apart from that, she had a marvelous voice. Jane: What do you think of the costumes? Jack: I thought they were very strange. Is what we saw in the first half real folk music? I mean are there people in the villages really doing this kind of thing? Jane: Yes, there are. Jack: I would very much like to be able to go to some of the villages and actually see them doing it, as it were in their environment. Jane: Yes, of course. This is the ideal. Jack: Well, I think I will do that. It looks as if the second half is starting. Jane: Yes, we must get back to our seats. Well, I do hope that you enjoy the second half as much as you seem to have enjoyed the first half. Jack was very excited about the concert and he used all the following words to express his excite-ment EXCEPT ______.
A.
fantastic
B.
vigorous
C.
marvelous
D.
well-done
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【判断题】焊缝弯曲试验分为正弯、背弯和侧弯三种。( )
A.
正确
B.
错误
【多选题】麦克风是一种常用的电子设备,它的内部就是一个小型传感器,可以把声音变成电信号.它的种类很多,其中有一种是动圈式的,它的工作原理是在弹性膜片后面黏接一个轻小的金属线圈,该线圈处在柱形永磁体的辐射状磁场中,当声音使膜片振动时,就能将声音信号转变成电信号,下列说法正确的是 ( )
A.
.该传感器是根据电流的磁效应工作的
B.
.该传感器是根据电磁感应现象工作的
C.
.膜片振动时,线圈内不会产生感应电流
D.
.膜片振动时,线圈内会产生感应电流
【简答题】简述农田杂草的危害。
【单选题】●The term, (74) loop, refers to a loop that is contained within another loop. (74)
A.
program
B.
nested
C.
statement,
D.
Network
【多选题】提取蛋白质免疫原的技术有( )
A.
选择性沉淀
B.
超速离心
C.
凝胶过滤
D.
离子交换层析
E.
亲和层析
【单选题】烤炉清洁剂和家用漂白剂的混合物会释放氯气。浴缸清洁剂和家用漂白剂的混合物也会释放氯气。不过普通肥皂和家用漂白剂的混合物则不会释放任何气体,当把未经鉴定的清洗剂加到家用漂白剂中时,也没有氯气释出。那么关于这种未知清洗剂,我们可以这样认为( )。
A.
它是普通肥皂
B.
既不是烤炉清洁剂,也不是浴缸清洁剂
C.
它含有普通肥皂成分,以及烤炉清洁剂或浴缸清洁剂成分
D.
它含有普通肥皂成分,但不含有烤炉清洁剂和浴缸清洁剂成分
【单选题】烤炉清洁剂和家用漂白剂的混合物会释放氯气,浴缸清洁剂和家用漂白剂的混合物也会释放氯气。不过普通肥皂和家用漂白剂的混合物则不会释放任何气体,当把未经鉴定的清洗剂加到家用漂白剂中时,也没有氯气放出。那么关于这种未知清洗剂,我们可以这样认为( )。
A.
它是普通肥皂
B.
既不是烤炉清洁剂也不是浴缸清洁剂
C.
它含有普通肥皂成分,以及烤炉清洁剂或浴缸清洁剂成分
D.
它含有普通肥皂成分。但不含有烤炉清洁剂或浴缸清洁剂成分
【单选题】下列化合物中属于芳香伯胺的是:
A.
CH 3 NH 2
B.
C 6 H 5 NH 2
C.
(CH 3 ) 3 N
D.
C 6 H 5 NHCH 3
E.
C 6 H 5 C H 2 NH 2
【简答题】采用铺浆法砌筑砌体,当施工期间气温超过 30°C时,铺浆长度不得超过( )mm。
【多选题】根据组展商与客户合作的深入程度,可以把客户划分为()。
A.
关系紧密型客户
B.
基础阶段客户
C.
合作阶段客户
D.
相互依赖阶段客户
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