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【单选题】
(2016· 海南卷, 14) 下列情况中,使用普通光学显微镜不能观察到的是 ( )
A.
人红细胞在蒸馏水中体积增大、破裂的现象
B.
洋葱鳞片叶表皮细胞膜的暗 — 亮 — 暗三层结构
C.
分布在水绵受极细光束照射部位的好氧细菌
D.
洋葱根尖细胞有丝分裂中期染色体的形态和分布
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举一反三
【简答题】Jill answered the phone. It was Jack. "Jill, will you marry me next week?" "What?" Jack repeated his question. "Of course not," she replied. She wondered why he was asking her that question. They had ...
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【单选题】“b”是双唇不送气清塞音,下列说法错误的是 。 ( )
A.
“双唇”指发音部位
B.
“不送气”指气流受阻方式
C.
“清”指声带振动方式
D.
“塞音”指阻碍方式
查看完整题目与答案
【判断题】升压试验时,应将水压直接升至试验压力 。
A.
正确
B.
错误
查看完整题目与答案
【简答题】液压试验 (1)试验介质及要求:凡是在压力试验时不会导致发生危险的液体,在低于( )温度下都可以作为液压试验的介质,供试验用的液体通常为洁净的水,故又称为水压试验。 (2)水压试验装置及其过程 如图所示,填写相应的设备名称( 1 )、( 2 )、( 3 )、( 4 )。 液压试验时将装设在容器最高处的排气阀( ),灌水将气体排尽后( )。开动试压泵使水压缓慢上升,达到规定的试验压力...
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【简答题】Case Study Case 6 Ten years ago, I met a Chinese doctor in the United States, and fell in love with him. In less than 6 months we got married. After my graduation we returned to Finland. My husband ha...
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【单选题】Had you married her, she _________abroad.
A.
wouldn’t go
B.
can’t go
C.
will not go
D.
wouldn’t have gone
查看完整题目与答案
【单选题】A married couple was in a car when the wife turned to her husband and asked, ' Would you like to stop for a drink?' 'No thanks,' he answered truthfully. So they didnt stop. The result? The wife—who ha...
A.
Silenced.
B.
Excited.
C.
Angry.
D.
Calm.
查看完整题目与答案
【单选题】He ( ) up until ten o'clock on Sunday morning.
A.
gets
B.
doesn't get
C.
don't get
D.
get
查看完整题目与答案
【简答题】A great man married a woman and they had a little lovely girl. When the little girl was growing up, the man usually hugged her and said, “I love you, little girl.” The Little girl would say, “I’m not ...
查看完整题目与答案
【单选题】下列关于消防水带的检查，说法错误的是（）。
A.
将整卷水带打开，用直尺测量其总长度，测量时包括水带的接口
B.
将测得的水带长度与有衬里消防水带的标称长度进行对比，如水带长度小于水带长度规格lm以上的，则可判该产品为不合格
C.
截取1.2m长的水带，使用手动试压泵或电动试压泵平稳加压至试验压力，保压5min，检查是否有渗漏现象，有渗漏则不合格
D.
在试验压力状态下，继续加压，升压至试样爆破，其爆破时压力不应小于水带工作压力的3倍
查看完整题目与答案
相关题目：
【简答题】Jill answered the phone. It was Jack. "Jill, will you marry me next week?" "What?" Jack repeated his question. "Of course not," she replied. She wondered why he was asking her that question. They had ...
查看完整题目与答案
【单选题】“b”是双唇不送气清塞音,下列说法错误的是 。 ( )
A.
“双唇”指发音部位
B.
“不送气”指气流受阻方式
C.
“清”指声带振动方式
D.
“塞音”指阻碍方式
查看完整题目与答案
【判断题】升压试验时,应将水压直接升至试验压力 。
A.
正确
B.
错误
查看完整题目与答案
【简答题】液压试验 (1)试验介质及要求:凡是在压力试验时不会导致发生危险的液体,在低于( )温度下都可以作为液压试验的介质,供试验用的液体通常为洁净的水,故又称为水压试验。 (2)水压试验装置及其过程 如图所示,填写相应的设备名称( 1 )、( 2 )、( 3 )、( 4 )。 液压试验时将装设在容器最高处的排气阀( ),灌水将气体排尽后( )。开动试压泵使水压缓慢上升,达到规定的试验压力...
查看完整题目与答案
【简答题】Case Study Case 6 Ten years ago, I met a Chinese doctor in the United States, and fell in love with him. In less than 6 months we got married. After my graduation we returned to Finland. My husband ha...
查看完整题目与答案
【单选题】Had you married her, she _________abroad.
A.
wouldn’t go
B.
can’t go
C.
will not go
D.
wouldn’t have gone
查看完整题目与答案
【单选题】A married couple was in a car when the wife turned to her husband and asked, ' Would you like to stop for a drink?' 'No thanks,' he answered truthfully. So they didnt stop. The result? The wife—who ha...
A.
Silenced.
B.
Excited.
C.
Angry.
D.
Calm.
查看完整题目与答案
【单选题】He ( ) up until ten o'clock on Sunday morning.
A.
gets
B.
doesn't get
C.
don't get
D.
get
查看完整题目与答案
【简答题】A great man married a woman and they had a little lovely girl. When the little girl was growing up, the man usually hugged her and said, “I love you, little girl.” The Little girl would say, “I’m not ...
查看完整题目与答案
【单选题】下列关于消防水带的检查，说法错误的是（）。
A.
将整卷水带打开，用直尺测量其总长度，测量时包括水带的接口
B.
将测得的水带长度与有衬里消防水带的标称长度进行对比，如水带长度小于水带长度规格lm以上的，则可判该产品为不合格
C.
截取1.2m长的水带，使用手动试压泵或电动试压泵平稳加压至试验压力，保压5min，检查是否有渗漏现象，有渗漏则不合格
D.
在试验压力状态下，继续加压，升压至试样爆破，其爆破时压力不应小于水带工作压力的3倍
查看完整题目与答案
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