皮皮学,免费搜题
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搜题
【单选题】
\t下列不属于艾滋病的病原学特点的是()
A.
病原体为人类免疫缺陷病毒(HIV),分为HIV-l和HIV-2两型
B.
为RNA病毒
C.
病毒为圆形或椭圆形,直径为90~140 nm,外层为类脂包膜,表面有锯齿样突起,内有圆柱状核心,由RNA反转录酶、DNA多聚酶和结构蛋白等组成
D.
HIV主要感染CD4 + 淋巴细胞,也能感染单核吞噬细胞、B细胞和小神经胶质细胞、骨髓干细胞
E.
在血清中同时有抗体和病毒存在情况下,该抗体能阻止此血液的传染性
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举一反三
【多选题】在统计学领域,学者们将数据分析划分为三类,它们是()。
A.
探索性数据分析
B.
描述性数据分析
C.
验证性数据分析
D.
研究性数据分析
【单选题】地、契、车】根据车辆购置税法律制度的规定,下列各项中,不属于车辆购置税征税范围的是( )。(2016年)
A.
农用运输车
B.
摩托车
C.
汽车
D.
火车
【多选题】In this section, you will read something about the museum in London . Please fill in the blanks with the given words. 在本节中请阅读伦敦博物馆的介绍,在空白处填入合适的选项。
A.
minutes
B.
running
C.
always
D.
noisy
E.
see Welcome to museum. In most museums, there is no shouting and no 1 , and you must not touch anything. But the Science Museum in London is different.It is 2 ! People talk about what they can 3 and do here. It is interesting for people of all ages. You can 4 find something new and have a wonderful time there. The museum is free to enter, so you can go in for a few 5 or stay all day.Do remember it is the most friendly museum in the whole world!
【单选题】地、契、车】根据车辆购置税法律制度的规定,下列各项中,不属于车辆购置税征税范围的是( )。(2017年)
A.
电动自行车
B.
三轮农用运输车
C.
挂车
D.
无轨电车
【简答题】当采用碎石垫层时,应在坑底先铺一层 150~300mm 厚的( )或铺一层( ),以防止软弱土层表面的局部破坏。
【单选题】地、契、车】甲汽车专卖店购入小汽车12辆,根据车辆购置税法律制度的规定,下列行为中,应当由甲汽车专卖店作为纳税人缴纳车辆购置税的是( )。(2013年)
A.
将其中6辆销售给客户
B.
将其中2辆作为董事长、总经理的专用轿车
C.
将其中1辆赠送给乙企业
D.
库存3辆尚未售出
【简答题】There are ten sentences in this section. Beneath each sentence there are four words or phrases marked A, B, C and D. Choose one word or phrase that best completes the sentences. 写出正确答案的大写字母 1. I have...
【多选题】在统计学领域,学者们将数据分析划分为三类,它们是()
A.
探索性数据分析
B.
验证性数据分析
C.
研究性数据分析
D.
描述性数据分析
【单选题】引起维生素D缺乏性佝偻病的最主要因素是
A.
日光照射不足
B.
维生素D摄入不足
C.
食物中钙、磷含量过低或比例不当
D.
婴儿生长过快
E.
以上都不是
【多选题】Refer to the exhibit. The network shown in the exhibit is running the RIPv2 routing protocol. The network has converged, and the routers in this network are functioning properly. The FastEthernet0/0 i...
A.
All routers will reference their topology database to determine if any backup routes to the 192.168.1.0 network are known.
B.
Routers R2 and R3 mark the route as inaccessible and will not accept any further routing updates from R1 until their hold-down timers expire.
C.
Because of the split-horizon rule, router R2 will be prevented from sending erroneous information to R1 about connectivity to the 192.168.1.0 network.
D.
When router R2 learns from R1 that the link to the 192.168.1.0 network has been lost, R2 will respond by sending a route back to R1 with an infinite metric to the 192.168.1.0 network.
E.
R1 will send LSAs to R2 and R3 informing them of this change, and then all routers will send periodic updates at an increased rate until the network again converges.
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