下图中A、B是实验室制取气体时的常用装置。请按要求填空: (1)写出A图中①②两

题型:实验题

问题:

下图中A、B是实验室制取气体时的常用装置。请按要求填空:

(1)写出A图中①②两种仪器的名称:①____;②____。

(2)实验室制取二氧化碳的化学方程式为_____________,选用的发生装置是____(填“A”或“B”),收集装置选____(填“C”或“D”),检验二氧化碳是否收集满的方法是_______。

(3)为了得到较多的二氧化碳气体,甲、乙两个化学兴趣小组分别设计了如上图所示的E、F装置,你认为可行的是____装置。

考点:二氧化碳的制取和收集常用仪器的名称和选用
题型:实验题

流通企业是连接制造业和最终客户的纽带

题型:实验题



Most taxpayers have had enough income tax collected by their employers during the year. So they do not (36) any money. In fact, most Americans get some money back. Last year, the Internal Revenue Service returned at least some money to more than (37) Americans paying individual income tax.
The United States has what is called (38) . Tax rates increase as (39) increase. This year, people earning more than (40) are taxed at the highest rate.
Earnings above that amount are taxed at (41) . Earnings below that amount are taxed at lower rates.
Individuals who earn less than (42) pay no income tax. But they do pay (43) , Medicare and other taxes.
There are many different ways for people and businesses to reduce their (44) Most homeowners, for example, can reduce their taxes a little by reporting to the I.R.S. the interest they pay (45) . This is called a (46)
In 2004, personal income taxes provided the government with most of its money: (47) of the budget. Social security and other (48) taxes provided (49) . Other forms of income include (50) , money borrowed to (51) and special taxes on (52) .
But income from taxes did not provide enough to pay for government spending. The I.R.S. says the budget deficit for 2004 was about (53) dollars.
Preparing tax documents can be complex. The I.R.S. estimates that taxpayers need an average of about 13 hours to prepare tax documents. And that is just for the basic tax form. For business, the I.R.S. estimates an (54) needs more than 50 hours. This is why a lot of Americans pay (55) to complete their tax documents for them.

题型:实验题

()应纳入银行结售汇综合头寸统计。

A.用来调整远期结售汇期限的人民币与外币掉期交易

B.人民币对外汇期权业务的DELTA头寸

C.人民币对外汇期权组合业务的DELTA头寸

D.人民币购售业务

题型:实验题

从公共管理角度来说,“一票否决”属于行政决策的( )。

A.全体一致原则
B.少数服从多数原则
C.过半数原则
D.民主集中制原则

题型:实验题

栈中允许进行插入和删除的一端叫做______。

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