[单项选择]In most cases, you have to use the chemicals within ______.
A. limits
B. borders
C. ranges
D. care

[单项选择]In most cases, you have to use the chemicals within ______.
A. limits
B. borders
C. ranges
D. care

[单项选择]I have no doubt ______ most of you can graduate from here.
A. although
B. as
C. whether
D. that

[单项选择]What seems to be the most important thing you have to decide on before a meeting starts ______
A. The length of the agenda
B. The frequency of the meetings
C. A specific objective to accomplish
D. Operational issues

[单项选择]Where can you most probably have a chance of seeing fishes
A. At the Pyramid and the Future Tower.
B. At the Travel Pavilion and the Pyramid.
C. At the Nature Park and the Travel Pavilion.
D. At the Future Tower and the Nature Park.

[单项选择]Which substitution variable would you use if you want to reuse the variable without prompting the user each time? （）
A. &
B. ACCEPT
C. PROMPT
D. &&

[单项选择] You are creating a DataTable. You use the following code segment to create the DataTable. (Line numbers are included for reference only.) 01 Dim dt As New DataTable("Products") 02 dt.Columns.Add(New DataColumn("Price", _ GetType(Decimal))) 03 dt.Columns.Add(New DataColumn("Quantity", _ GetType(Int32))) 04 Dim dc As DataColumn = New DataColumn("Total", _ GetType(Decimal)) 05 dt.Columns.Add(dc) You need to ensure that the Total column is set to the value of the Price column multiplied by the Quantity column when new rows are added or changed. What should you do? （）
A. Add the following code segment after line 05. dc.ExtendedProperties("Total") = "Price * Quantity"
B. Add the following code segment after line 05. dc.Expression = "Price * Quantity"
C. Write an event handler for the DataTable's TableNewRow event that updates the row's Total.
D. Write an event handler for the DataTable's ColumnChanged event that updates the row's Total.

[单项选择]Many pure metals have little use because they are too soft , rust too easily, or have some other __________.
A. drawbacks
B. handicaps
C. bruises
D. blunders

[单项选择]Most good writers use every means ______ to make the reader' s way smooth and easy.
A. at their disposal
B. at their request
C. at their will
D. at their convenience

[单项选择] You have been asked to use a 25 bit subnet mask to segment the following network block: 209.18.12.0. How many usable will there be per subnet?（）
A. 2 hosts
B. 120 hosts
C. 126 hosts
D. 255 hosts

[单项选择]You have been asked to use a 28 bit subnet mask to segment the following network block: 108.12.5.0. How many usable hosts per sub-net could you create?（）
A. 10 hosts
B. 14 hosts
C. 12 hosts
D. 16 hosts

[单项选择]You have been asked to use a 30 bit subnet mask to segment the following network block: 108.12.5.0. How many useable subnetworks and usable hosts could be created?（）
A. 32 networks with 8 hosts
B. 62 networks with 2 hosts
C. 30 networks with 16 hosts
D. 32 networks with 14 hosts

[单项选择]Did you use to （） when you were a girl
A. enjoy playing
B. enjoy play house
C. enjoying to play house
D. enjoying play house