Example sentences of "have only a single " in BNC.

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1 In general , each neuron has only a single transmitter , such as acetylcholine , noradrenaline or dopamine .
2 The SRP60N ribber can be set like this , but you can also use the autoset lever to produce a fabric that has only a single colour on the reverse .
3 A bees ' nest has only a single entrance , so air can not be made to flow through it as it does through a prairie dog 's tunnel .
4 In 1976 Rossler [ 23 ] introduced a simpler three-dimensional system that has only a single nonlinear cross-term , zx : ( 2.4 ) unc where a , b and c are constants .
5 Although there are three sources of input to the logogen system , there is only one set of logogens , and any word has only a single logogen .
6 In general , matrices are rectangular ; but of particular importance are matrices having equal numbers of rows and columns — i.e. square matrices — and those having only a single row or column , which we call vectors ; both types are special forms of rectangular matrices .
7 Roger Short , of the Medical Research Council 's Reproduction Research Unit in Edinburgh , had predicted that in species where females mate with more than one male during a reproductive cycle , the males would have larger testes for their body size than in species whose females had only a single mate per cycle .
8 In this initial skirmish his men suffered badly with some 20 killed and 120 wounded , while the rebels , well dug in , had only a single casualty .
9 In 1671 8·2 per cent of the householders had at least six hearths ( the squire had twenty ) , 23·8 per cent had three to five hearths , 17·2 per cent had two hearths , and 50·8 per cent had only a single hearth .
10 Beaked whales generally have only a single pair of teeth protruding from their lower jaw , and instead of teeth they use a ribbed palate to get a firm grasp on their prey .
11 The Committee on Safety of Medicines ( personal communication ) has received only a single report of visual disorder associated with chlorambucil — namely , corneal opacity — and the manufacturers ( Wellcome ) have only a single report of optic neuritis , occurring on day 1 of chlorambucil treatment and not resolving on withdrawal .
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