yes
No hyphen is needed for world class. World is just an adjective that describes class much like (for example) upper class, which also does not need a hyphen.
The term "upper class" typically does not require a hyphen when used as a noun or adjective in most contexts, such as "the upper class" or "upper class citizens." However, it can be hyphenated as "upper-class" when used as a compound adjective directly before a noun, for example, "upper-class families." Always consider the context to determine if hyphenation is necessary.
otherwise the two upper numbers will read by AutoCAD incorrectly, 71/2 is different than 7-1/2
17-18".
Make visual check of coupling. (No space between upper and lower fifth wheel. Locking jaws closed on kingpin.
Why not? However, it should only be between the girl and her husband per licit marriage.
The summer temperature is generally moderate but due to the very humid climate, the heat-index can be significantly higher. Winter temperatures due to strong winds and heavy rain can be very cold, feeling below freezing, even though typically not going below 50 degrees fahrenheit. The climate has been gradually warming since the 1980s. In the spring, the actual temperature tends to be in the upper sixties, in the summer the upper seventies, in the fall the upper seventies to the mid sixties, and in the winter the mid sixties to the high fifties. The felt temperature as noted is much more extreme. There is an average of 55.5 inches of rainfall a year which usually tends to be distributed equally each month.
The upper mantle is harder than the lower mantle
The pharynx is the upper area between the mouth and thetracheaandesophagus.
Not when you are writing by hand.When typing you can divide long words at convenient places, such as were syllables meet. So that the word transparent could be divided trans-parent or transpar-ent, but not transp-arent.You can usually set hyphenation in most word processing applications.
In photography, the term "headroom" refers to the space that should be allowed for between the top of the subject's head and the upper edge of the photo frame.
The medical term for the groove between the nose and upper lip is called the "Philtrum."