皮皮学，免费搜题
登录
logo - 刷刷题
搜题
【单选题】
FTP默认使用的端口是()。
A.
21
B.
23
C.
25
D.
22
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案：
举一反三
【单选题】病毒常用的测量单位是
A.
m
B.
dm
C.
cm
D.
mm
E.
μm
F.
nm
查看完整题目与答案
【单选题】The newly built school offers courses in every subject______.
A.
imagined
B.
imaginable
C.
imaginary
D.
imaginative
查看完整题目与答案
【简答题】He spoke very loudly. He wanted everybody in the room to hear what he said.
查看完整题目与答案
【简答题】亚硝酸钠（NaNO 2 ）是一种亚硝酸盐；如果食物中亚硝酸盐含量较高会引起食物中毒．其中毒症状是，1-3小时内便可让人缺氧，出现恶心、呕吐、头晕、乏力、口唇发紫、呼吸困难．请根据要求回答下面的问题． a．NaNO 2 中氮元素的化合价是______； b．NaNO 2 中氮，氧元素的质量比是______；钠元素的质量分数是______（保留一位小数）； c．欲配置140g的2%亚硝酸钠溶液用于亚硝...
查看完整题目与答案
【单选题】测量病毒常用的单位是
A.
cm
B.
mm
C.
μm
D.
nm
查看完整题目与答案
【简答题】夏初，在某河口多地点采集并测定水样，结果表明，各采样点无机氮浓度相近，而无机磷浓度差异较大，按无机磷浓度由低到高的顺序，绘制各采样点对应的浮游植物和浮游动物的密度曲线，结果如下图。 据图回答： (1)磷元素进入浮游植物细胞后，以_______分子的形式成为细胞膜支架的成分；在细胞内，磷元素通过参与__________反应(写反应式)，保持细胞内ATP含量的相对稳定。 (2)分析发现，P 1 、P ...
查看完整题目与答案
【单选题】Think of the ocean on a calm day. Ignoring the rise and fall of the waves, you might imagine the surface was dead flat the whole way across. You'd be wrong. Hills and valleys are as much as a feature ...
A.
the surface of the sea is a dead flat on a calm day
B.
the sea waves are caused by a variety of factors
C.
it's a good idea to swim uphill, sometime
D.
hills and valleys only exist on land
查看完整题目与答案
【简答题】There is a definite possibility that the climate of the world may be changing. Some scientists imagine that this could even mean the beginning of another ice age. The effects of such a change in clima...
查看完整题目与答案
【单选题】Being  blind, deaf, _____ to walk or use your hands easily is something that most people can not imagine. [     ]
A.
able
B.
unable
C.
disable
D.
disabled
查看完整题目与答案
【单选题】Never in my wildest dream _________ these people are living in such poor conditions.
A.
I could imagine  
B.
could I imagine  
C.
I couldn't imagine 
D.
couldn't I imagine
查看完整题目与答案
相关题目：
【单选题】病毒常用的测量单位是
A.
m
B.
dm
C.
cm
D.
mm
E.
μm
F.
nm
查看完整题目与答案
【单选题】The newly built school offers courses in every subject______.
A.
imagined
B.
imaginable
C.
imaginary
D.
imaginative
查看完整题目与答案
【简答题】He spoke very loudly. He wanted everybody in the room to hear what he said.
查看完整题目与答案
【简答题】亚硝酸钠（NaNO 2 ）是一种亚硝酸盐；如果食物中亚硝酸盐含量较高会引起食物中毒．其中毒症状是，1-3小时内便可让人缺氧，出现恶心、呕吐、头晕、乏力、口唇发紫、呼吸困难．请根据要求回答下面的问题． a．NaNO 2 中氮元素的化合价是______； b．NaNO 2 中氮，氧元素的质量比是______；钠元素的质量分数是______（保留一位小数）； c．欲配置140g的2%亚硝酸钠溶液用于亚硝...
查看完整题目与答案
【单选题】测量病毒常用的单位是
A.
cm
B.
mm
C.
μm
D.
nm
查看完整题目与答案
【简答题】夏初，在某河口多地点采集并测定水样，结果表明，各采样点无机氮浓度相近，而无机磷浓度差异较大，按无机磷浓度由低到高的顺序，绘制各采样点对应的浮游植物和浮游动物的密度曲线，结果如下图。 据图回答： (1)磷元素进入浮游植物细胞后，以_______分子的形式成为细胞膜支架的成分；在细胞内，磷元素通过参与__________反应(写反应式)，保持细胞内ATP含量的相对稳定。 (2)分析发现，P 1 、P ...
查看完整题目与答案
【单选题】Think of the ocean on a calm day. Ignoring the rise and fall of the waves, you might imagine the surface was dead flat the whole way across. You'd be wrong. Hills and valleys are as much as a feature ...
A.
the surface of the sea is a dead flat on a calm day
B.
the sea waves are caused by a variety of factors
C.
it's a good idea to swim uphill, sometime
D.
hills and valleys only exist on land
查看完整题目与答案
【简答题】There is a definite possibility that the climate of the world may be changing. Some scientists imagine that this could even mean the beginning of another ice age. The effects of such a change in clima...
查看完整题目与答案
【单选题】Being  blind, deaf, _____ to walk or use your hands easily is something that most people can not imagine. [     ]
A.
able
B.
unable
C.
disable
D.
disabled
查看完整题目与答案
【单选题】Never in my wildest dream _________ these people are living in such poor conditions.
A.
I could imagine  
B.
could I imagine  
C.
I couldn't imagine 
D.
couldn't I imagine
查看完整题目与答案
参考解析：
知识点：
题目纠错 0
发布
创建自己的小题库 - 刷刷题