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【简答题】
温莎结是最正统的打领带系法,打出的结成 ,多用于出席正式场合。
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皮皮学刷刷变学霸
举一反三
【单选题】Which of the following sounds describes a wheeze?
A.
A low pitch rumbling sound that sounds like a train.
B.
A high pitched whistling sound on expiration.
C.
A constant sound of running water.
D.
A quiet sound on inspiration that sounds distant.
【简答题】The speech sounds which are in complementary distribution are definitely allophones of the same phoneme.
【单选题】The branch of linguistics which studies the characteristics of speech sounds and provides methods for their description, classification and transcription is called ______.
A.
phonology
B.
phonetics
C.
morphology
D.
syntax
【判断题】Sounds which are produced with both the upper lip and the lower lip are called bilabials.()
A.
正确
B.
错误
【单选题】某阀门结构简单、体积小、重量轻,仅由少数几个零件组成,操作简单,阀门处于全开位置时,阀板厚度是介质流经阀体的唯一阻力,阀门所产生的压力降很小,具有较好的流量控制特性。该阀门应为( )。
A.
截止阀
B.
蝶阀
C.
旋塞阀
D.
闸阀
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