皮皮学，免费搜题
登录
搜题
【单选题】
小明用显微镜观察了洋葱表皮细胞和人的口腔上皮细胞作了如下记录，其中正确的是 ①洋葱表皮细胞中央有较大的液泡 ②口腔上皮细胞由细胞膜、细胞质、细胞核构成 ③洋葱表皮细胞中有叶绿体 ④视野中有气泡，可能是玻片时操作不当造成的 ⑤视野中光线过应调节反光镜和光圈 ⑥要想看到更多的细胞应换用放大倍数更大的目镜或物镜 [ ]A.
①②④⑤
B.
②③④⑥
C.
①③⑤⑥
D.
②③④⑤
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【简答题】按照工序的性质,可以把工序分为 和 两类。
【单选题】患者男性，67岁。慢性肺气肿病史20多年，2周前感冒后出现发热、咳嗽、咳大量黏液脓痰。近3日来咳嗽无力，痰不易咳出，气急、发绀。最主要的护理诊断是
A.
气体交换受损
B.
清理呼吸道无效
C.
有窒息的危险
D.
呼吸型态紊乱
E.
恐惧
【简答题】Phonetic similarity means that the______of a phoneme must bear some phonetic resemblance.（中山大学2011研)
【单选题】Dear Alumni, Parents and Friends, Noted British politician Sir Winston Churchill once said, 'Every day you may make progress. Every step may be fruitful. Yet there will stretch out before you an ever-...
A.
It is impossible for us to reach those goals that are not realistic.
B.
The difficulties ahead will discourage those without a strong will power.
C.
We should strive for what we set as our goals and success no matter what happens.
D.
The road to success is filled with difficulties and even uncertainties.
【单选题】—Do you know Li Na? —Of course. She's a great tennis player _______ comes from Hubei, China. [ ]
A.
who
B.
what
C.
which
【单选题】British politician, Ann Widdecombe, once said, "When it comes to talking about the weather the British people are a nation of ______."
A.
umbrellas
B.
competitors
C.
complaints
D.
grumblers
【简答题】何谓视距三角形?应如何绘制?
【单选题】下列关于碱金属某些性质的排列中，正确的是
A.
原子半径：Li＜Na＜K＜Rb＜Cs
B.
密度：Li＜Na＜K＜Rb＜Cs
C.
熔点、沸点：Li＜Na＜K＜Rb＜Cs
D.
还原性：Li＞Na＞K＞Rb＞Cs
相关题目：
参考解析：
知识点：
题目纠错 0
发布
