Problem: Printed circuit board:

At the glass transition temperature the resin in the composite softens and significantly increases thermal expansion; exceeding Tg then exerts mechanical overload on the board components - e.g. the joints and the vias. Below Tg the thermal expansion of the resin roughly matches copper and glass, above it gets significantly higher. As the reinforcement and copper confine the board along the plane, virtually all volume expansion projects to the thickness and stresses the plated-through holes. Repeated soldering or other exposition to higher temperatures can cause failure of the plating, especially with thicker boards; thick boards therefore require high Tg matrix.

What will happen to the components when the temperature of resin goes above that of glass transition?
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A: mechanical overload


Problem: A staple for consumers in the city is the omnipresent "mercado". Every major neighborhood in the city has its own borough-regulated market, often more than one. These are large well-established facilities offering most basic products, such as fresh produce and meat/poultry, dry goods, tortillerías, and many other services such as locksmiths, herbal medicine, hardware goods, sewing implements; and a multitude of stands offering freshly made, home-style cooking and drinks in the tradition of aguas frescas and atole.
The author uses which adjective to describe the mercados?
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Answer: omnipresent


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Oklahoma is host to a diverse range of sectors including aviation, energy, transportation equipment, food processing, electronics, and telecommunications. Oklahoma is an important producer of natural gas, aircraft, and food. The state ranks third in the nation for production of natural gas, is the 27th-most agriculturally productive state, and also ranks 5th in production of wheat. Four Fortune 500 companies and six Fortune 1000 companies are headquartered in Oklahoma, and it has been rated one of the most business-friendly states in the nation, with the 7th-lowest tax burden in 2007.
How does Oklahoma rank among US states for producing wheat?
A: 5th


Context and question: Eisenhower attended Abilene High School and graduated with the class of 1909. As a freshman, he injured his knee and developed a leg infection that extended into his groin, and which his doctor diagnosed as life-threatening. The doctor insisted that the leg be amputated but Dwight refused to allow it, and miraculously recovered, though he had to repeat his freshman year. He and brother Edgar both wanted to attend college, though they lacked the funds. They made a pact to take alternate years at college while the other worked to earn the tuitions.
What high school year did Eisenhower have to repeat?
Answer: freshman


Question: The panel is eventually broken apart into individual PCBs; this is called depaneling. Separating the individual PCBs is frequently aided by drilling or routing perforations along the boundaries of the individual circuits, much like a sheet of postage stamps. Another method, which takes less space, is to cut V-shaped grooves across the full dimension of the panel. The individual PCBs can then be broken apart along this line of weakness. Today depaneling is often done by lasers which cut the board with no contact. Laser panelization reduces stress on the fragile circuits.
Is there an answer to this question: The panel is eventually merged into what?

Answer: unanswerable


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Menzies called a conference of conservative parties and other groups opposed to the ruling Australian Labor Party, which met in Canberra on 13 October 1944 and again in Albury, New South Wales in December 1944. From 1942 onward Menzies had maintained his public profile with his series of "The Forgotten People" radio talks–similar to Franklin D. Roosevelt's "fireside chats" of the 1930s–in which he spoke of the middle class as the "backbone of Australia" but as nevertheless having been "taken for granted" by political parties.
Was the meeting at Canberra a group of people supporting or opposed to the Australian Labor Party?
A:
opposed