Question: Matte solder is usually fused to provide a better bonding surface or stripped to bare copper. Treatments, such as benzimidazolethiol, prevent surface oxidation of bare copper. The places to which components will be mounted are typically plated, because untreated bare copper oxidizes quickly, and therefore is not readily solderable. Traditionally, any exposed copper was coated with solder by hot air solder levelling (HASL). The HASL finish prevents oxidation from the underlying copper, thereby guaranteeing a solderable surface. This solder was a tin-lead alloy, however new solder compounds are now used to achieve compliance with the RoHS directive in the EU and US, which restricts the use of lead. One of these lead-free compounds is SN100CL, made up of 99.3% tin, 0.7% copper, 0.05% nickel, and a nominal of 60ppm germanium.
Try to answer this question if possible: The HASL finish encourages oxidation from what?
Answer: unanswerable
Question: House minority leaders also hold joint news conferences and consult with their counterparts in the Senateand with the president if their party controls the White House. The overall objectives are to develop a coordinated communications strategy, to share ideas and information, and to present a united front on issues. Minority leaders also make floor speeches and close debate on major issues before the House; they deliver addresses in diverse forums across the country; and they write books or articles that highlight minority party goals and achievements. They must also be prepared "to debate on the floor, ad lib, no notes, on a moment's notice," remarked Minority Leader Michel. In brief, minority leaders are key strategists in developing and promoting the party's agenda and in outlining ways to neutralize the opposition's arguments and proposals.
Try to answer this question if possible: What is the overall party strategy for minority leader?
Answer: develop a coordinated communications strategy, to share ideas and information, and to present a united front on issues
Question: Roman histories and biographies anticipated the extensive mediaeval literature of lives of saints and miraculous chronicles, but the most characteristic form of the Middle Ages was the romance, an adventurous and sometimes magical narrative with strong popular appeal. Controversial, religious, political and instructional literature proliferated during the Renaissance as a result of the invention of printing, while the mediaeval romance developed into a more character-based and psychological form of narrative, the novel, of which early and important examples are the Chinese Monkey and the German Faust books.
Try to answer this question if possible: What is an early example of the novel form of literature from Europe?
Answer: the German Faust books
Question: The Western family includes Parthian (Arsacid Pahlavi) and Middle Persian, while Bactrian, Sogdian, Khwarezmian, Saka, and Old Ossetic (Scytho-Sarmatian) fall under the Eastern category. The two languages of the Western group were linguistically very close to each other, but quite distinct from their eastern counterparts. On the other hand, the Eastern group was an areal entity whose languages retained some similarity to Avestan. They were inscribed in various Aramaic-derived alphabets which had ultimately evolved from the Achaemenid Imperial Aramaic script, though Bactrian was written using an adapted Greek script.
Try to answer this question if possible: Bactrian, Sogdian, and Saka are examples of what type of Iranian language?
Answer:
Eastern