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【多选题】
我国税率的形式主要有()A.
比例税率
B.
固定税率
C.
累进税率
D.
定额税率
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参考解析：
知识点：
皮皮学刷刷变学霸
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【简答题】已知：如图，∠MON及边ON上一点A．在∠MON内部求作：点P，使得PA⊥ON，且点P到∠MON两边的距离相等．（请尺规作图，保留作图痕迹，不要求写出作法，不必证明）．
【单选题】解决粉末直接压片中存在的可压性差的问题可以采取的措施是( )
A.
压片机增加预压装置
B.
缩短药片受压时间
C.
使压片机车速加快
D.
在处方中大量使用淀粉
E.
加入润滑剂改善
【单选题】解决粉末直接压片中存在的可压性差的问题可以采取的措施是( )
A.
压片机增加预压装置
B.
缩短片剂受压时间
C.
使压片机车速加快
D.
在处方中大量使用淀粉
E.
加入润滑剂改善
【简答题】已知：如图，OM平分∠AOB，ON平分∠BOC。 （1）当∠AOC=90°，∠BOC=60°时，∠MON=（ ）； （2）当∠AOC=80°，∠BOC=60°时，∠MON =（ ）； （3）当∠AOC=80°，∠BOC=50°时，∠MON =（ ）； （4）猜想不论∠AOC和∠BOC的度数是多少，∠MON的度数总等于（ ）度数的一半。
【单选题】有关MON口的说法错误的是
A.
D40的MON口是从输入侧(IN口)提取监控光信号
B.
FIU板的MON从发送方向(OUT口)提取监控光信号
C.
OAU的OUT口和MON口的光功率相差20dB
D.
OBU的MON是从输入侧(IN口)提取监控光信号
【简答题】如图，在∠MON的两边上顺次取点．使DE=CD=BC=AB=OA，若∠MON=22°，则∠NDE=______°．
【多选题】How are proteins glycosylated on asparagines in the ER?
A.
In the ER, individual sugars are not added one-by-one to the protein to create an oligosaccharide side chain. Instead, a preformed, branched oligosaccharide containing a total of 14 sugars is attached en bloc to all proteins that carry the appropriate site for glycosylation.
B.
The oligosaccharide is originally attached to a specialized lipid, called dolichol, in the ER membrane; it is then transferred to the amino (NH 2 ) group of an asparagine side chain on the protein, immediately after a target asparagine emerges in the ER lumen during protein translocation. Asparagines that are glycosylated are always present in the tripeptide sequences asparagine-X-serine or asparagine-X-threonine, where X can be almost any amino acid.
C.
The addition takes place in a single enzymatic step that is catalyzed by a membrane-bound enzyme (an oligosaccharyl transferase) that has its active site exposed on the lumenal side of the ER membrane— which explains why cytosolic proteins are not glycosylated in this way.
D.
A simple sequence of three amino acids, of which the target asparagine is one, defines which sites in a protein receive the oligosaccharide. Oligosaccharide side chains linked to an asparagine NH 2 group in a protein are said to be N-linked and this is by far the most common type of linkage found on glycoproteins.
【单选题】有关MON口的说法错误的是()。
A.
WBA的OUT口是和MON口的功率比为9
B.
D32的MON口是从输入侧（IN口）提取监控光信号
C.
WBA的MON是从发送方向（OUT口）提取监控光信号
D.
WPA板从发送方向（OUT口）提取监控光信号
【单选题】解决粉末直接压片中存在的可压性差的问题可以采取的措施是()
A.
压片机增加顶压装置
B.
缩短压片受压时间
C.
使压片机车速加快
D.
在处方中大量使用淀粉
E.
加入润滑剂改善
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