In the International Code of signals,a group of three letters indicates ___.( ) A. urgency or an emergency B. the vessel's national identity signal C. a group from the general signal code D. a group from the medical signal code 相关...
Briem’s notes on type design:o-group three: the letter s¶ In the sixteenth century there were two kinds of the letter s. One was the short, curvy kind that we see everywhere nowadays. It was used to end words. And when two letters s stood side by side, it came second. (Arrigh...
Representations of the quaternion group by 2×2 matrices with coefficients in the ring of integers of an imaginary quadratic field.doi:10.1016/j.jalgebra.2006.01.058Jean-Pierre SerreElsevier Inc.Journal of AlgebraJ.-P. Serre, Three letters to Walter Feit on group representations and quaternions, ...
The cuprous chloride catalyzed reaction of 3-chloro-1-propene with a variety of lithium tetraorganoaluminates has been studied.191The tetraorganoaluminates are made by reaction of 1-olefins with lithiumaluminumtetrahydride catalyzed bytitanium tetrachloride. Yields of three-carbon homologated 1-olefins...
been recognized primarily in three forms—as a common value shared by individuals, as a public value that is important for the functioning of democratic systems and as a common value that is necessary in order to ensure everyone enjoys a minimum modicum of privacy (Hughes, 2015; Regan, 1995...
Accessions are grouped according to the three subgroups, “N’Drowa”, “Klogbo” and “Gnangnan”. Means within rows separated by different letters are significantly different at p-value < 0.05, according to the Newman–Keuls test. Apart from stem prickles and leaf blade prickles, 12 of...
必须同时包含大写英文字母、小写英文字母、数字和特殊字符中的三项,支持的特殊字符为:( ) ` ~ ! @ # $ % ^ * - + = | { } [ ] : ; ‘ , . ? /。' ConstraintDescription: en: 'Length 8-30, must contain upper case letters, lower case letters, Numbers, special symbols three; special ...
Religious people split into three main groups when faced with science. I shall label them the “know-nothings”, the “know-alls”, and the “no-contests”. — Richard Dawkins From speech at the Edinburgh International Science Festival (15 Apr 1992), published in the Independent newspaper. ...
She achieved a Degree in Zoology at the age of thirty and then went on to raise two boys and became the stepmother of three more young children. She still lives near her family home with her partner, their Great Dane and the children that have yet to fly the nest. In her early ...
primaryamino group. The electronic spectrum of 4-aminopyridine has been considered in some detail by Mason29Measurements on the three accessible ionic species of the monocyclic N-heteroaromatic amines, viz. the neutral amine (XLVI), the cation (XLVII) and the imine or zwitterion ion form ...