Driver and/or passenger front airbags will only deploy if a collision occurs how many degrees from straight ahead?
A) 90 B) 20 C) 45 D) 30
D
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At room temperature, the stable crystal structure of iron is bcc. However, above 1183 K it becomes fcc. The iron fcc crystal structure is able to dissolve a much larger concentration of carbon than is the bcc structure. A primary reason for this is believed to be, that while the fcc structure is more close packed, the octahedral sites in the fcc lattice are much larger than the sites occupied by the carbon atoms in the bcc structure. The hole at the center of the fcc unit cell is such a site. See Fig. 1A. The minimum opening in one of these sites corresponds to the distance between atoms along a <100> direction. Note: that this is the same type of site as in the bcc case. Compare the fcc opening with that of the bcc lattice. For the sake of convenience, assume that the iron atom
diameter is the same as that of the bcc atom at room temperature. What will be an ideal response?
It is recommended that the four-pair UTP cable be bent so that the radius of the bend is not less than __________ times the diameter of the cable.
a. 4 b. 5 c. 7 d. 8
In the accompanying figure, item number 1 represents a(n) ____.
A. center that falls outside the object B. broken dimension line C. relative reference D. detached dimension line
Concrete formwork must be properly prepared so it will not _____
a. blow out b. leak c. settle d. implode