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【单选题】
下列关于X线管产生的X线描述正确的是()A.
X线管放射出的X线是波长不等、连续的混合射线
B.
X线管放射出的X线是连续均匀的射线
C.
属于特征X线
D.
属于标识放射线
E.
X线波长较长
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举一反三
【单选题】________ are linguistic expressions used to signal the relation of an utterance to its immediate context, with the primary function of bringing to the listener’s attention a particular kind of linkage...
A.
Lexical cohesion
B.
Conjunctions
C.
Discourse markers
D.
Information Structures
【简答题】下列各项中，能够引起所有者权益总额变化的有（ ）。
【单选题】________ concerns with the grammatical and/or lexical relationships between the different elements of a discourse.
A.
Cohesion
B.
Coherence
C.
Reference
D.
Substitution
【单选题】If a teacher asks students to concentrate on such features as structure/coherence and cohesion of a text,he/she aims at developing students’ ____ .
A.
strategic competence
B.
culture awareness
C.
communicative competence
D.
discourse awareness
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