单冲压片机及旋转式压片机 A.只靠上冲加压 B.以调节下冲在模孔中的位置实现片重调节

题型:单项选择题

问题:

单冲压片机及旋转式压片机

A.只靠上冲加压
B.以调节下冲在模孔中的位置实现片重调节
C.靠上下冲同时加压
D.只靠下冲加压
E.具压力缓冲装置

考点:西药执业药师药学专业知识(二)西药执业药师药学专业知识(二)
题型:单项选择题

如图所示,一光滑平行金属轨道平面与水平面成θ角。两轨道上端用一电阻R相连,该装置处于匀强磁场中,磁场方向垂直轨道平面向上。质量为m的金属杆ab,以初速度v0从轨道底端向上滑行,滑行到某以高度h后又返回到底端。若运动过程中,金属杆始终保持与导轨垂直且接触良好,且轨道与金属杆的电阻均忽略不计,则(  )

A.整个过程中金属杆所受合外力的冲量大小为2mv0

B.上滑到最高点的过程中克服安培力与重力所做功之和等于

C.上滑到最高点的过程中电阻R上产生的焦耳热等于

D.金属杆两次通过斜面上的同一位置时电阻R的热功率相同

题型:单项选择题

家住清流区的王某想开一家烟草专卖商行,便向该区的烟草专卖局提出了申请。烟草专卖局经过审核,认为王某合乎条件,便作出了许可其开办烟草专卖商行的决定。请问这个决定应在几日内向王某颁发:

A.5日

B.7日

C.10日

D.15日

题型:单项选择题

B

The internet has become part of teenage life.

A new report on 3,375 students aged from 10 to 18 in seven Chinese cities found that 38 percent of them believe they use the Internet often.

While most of them get useful information and use the Internet to help in their studies, some are not using it in a good way.

In order to help young people use the Internet in a good way, a textbook on good Internet behavior has started to be used in some Shanghai middle schools this term. The book uses real examples to teach students all about good ways of using the Internet. The book gives useful advice such as it’s good to read news or find helpful information to study.

Some students also make online friends. But if you are meeting a friend offline, make sure your parents know. Teachers and parents all think the book is of great help. A teacher said the book would be a guide for teens using the Internet. She believes it will keep students away from bad sites. “Many students are using the Internet without guidance from their parents,” she said.  “The book will teach students how to be a good person in the online world.”

40、The textbook mainly tells us    .

why we should use the Internet.

How to study using the Internet.

How to use the Internet correctly.

How to get help from others.

41、What’s the attitude(态度)of teachers and parents towards the textbook?   

A.They are against it.

B.They are for it.

C.They don’t care about it.

D.The passage doesn’t mention.

42、According to the passage, teenagers are NOT encouraged to    .

A.read online news

B.go online

C.find helpful information online

D.meet a friend offline without letting their parents know

43、From this passage we know that    .

A、more and more students have given up visiting bad sites

B、schools and teachers begin to pay attention to students’ use of the Internet

C、no more homework will be given in shanghai middle schools

D、less and less information can be found online

44、What’s the meaning of the underlined phrase “of great help” ?

A、helpful   B、good   C、bad   D、usefully

题型:单项选择题

用EDTA滴定水中的Ca2+、Mg2+时,加入三乙醇胺消除Fe3+的干扰是()掩蔽法。

题型:单项选择题

200公里空调系统的应急通风没有集中控制,只能是单车进行控制。

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