C 73

Since the IP address changes, how do a site block a certain computer or network from visting.

In motor car air conditioning system there are an “A/C” switch and a “Fan” switch.

1. What are these switches for?

2. Should these 2 switches be set to OFF before shutting down the engine?

Some Japanese motor car manufacturers use black adhesive platic sheet to cover the frames of car windows instead of painting.

Will the plastic sheet peel off by itself easily and will the color fade?

When matte photos are scanned, parallel white lines appear on the images.

Is there software which will prevent the formation of the lines or erase them from the image ?

Why disel engine needs timming belt and gasoline engine does not?

Can I boot the computer without entering the BIOS to change the boot sequence.

How to pin the Power icon and Search icon beside the account icon in Windows 8.1 start menu?

I purchased a brand new laptop installed with Windows 8.1.

I noted that there is no Proof of Licence sticker came with the unit.

Is this the new practice or can there be any other reasons?

This is a very useful website for those who desire to learn English.

http://www.usingenglish.com/

Submariners use sonar to detect the position of enemy's submarine, does the sonar disclose the position of the submarine to the enemy?

When I was 18 years old, my father bought me a car which is/was a Toyota.

"is" or "was" should be used ?

Someone wrote "John failed the exam."

I answered " If my information is/was correct, it is/was because he did not study hard"

Which be verb is correct?

"For those who wish......................................, please refer to......................................."

Is the word "For" necessry in the sentence?

If "yes", what is its function?

The followings are the explanations of “confiscate” found in different dictionaries:

1. Take temporary possession of as a security, by legal authority.

2. To seize as forfeited to the public domain; appropriate, by way of penalty, for public use.

The first explanation indicates a temporary action, the second indicates a permanent action.

Which is the true meaning of “confiscate”?

QUASI-SOVEREIGN SECURITIES are bonds issued by agencies with the backup of government.

What are the differences between Quasi Sovereign bonds and Sovereign bonds with regard to safety in investment?

In case the agency bankrupts, can the bond holders get back all their money from the government?

Is Lehman Brothers Bond Quasi Sovereign bond?

“On what date did you arrange to meet him on Saturday night?”

Does this sentence ask

1. On what date is the arrangement made? (meeting time is Saturday night)

Or

2. On what date will you meet him? (arrangement is made on Saturday night)

1. I stay home on weekends.

2. I stay at home on weekends.

What is the difference between the 2 sentences?

One of the meanings of the word “have” given by the Yahoo online English / Chinese dictionary is “must”

The example given by the dictionary indicates that “have” is verb and “to go” is infinitive.

“I have to go right now. 我馬上得走” (the word "have" is printed in violet, other words printed in black)

Is the Yahoo dictionary correct?

“紅色原子筆” 從字面上看, 它的意思是: 1.外表是紅色的原子筆, 如紅色的筆桿, 可以不管它的墨水是什么顏色。或2.裝有紅色墨水的原 子筆,用它寫的字是紅色的, 不可以管它的外表是什么顏色。