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【单选题】
分光计的平行光管和汞灯光源结合,会产生( )光。
A.
观察实验现象
B.
产生平行线光源
C.
放置被测物
D.
读取数据
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举一反三
【单选题】Which of following is located between the sphincter ani interus and the sphincter ani internus?
A.
Anorectal line
B.
ductus deferens
C.
Dentate line
D.
Anal pecten
E.
White line
【单选题】If two sounds are in complementary distribution, they are ______ of the same phoneme.
A.
allophones
B.
symbols
C.
phones
D.
signs
【单选题】滴虫性阴道炎导致不孕症的主要机制是
A.
滴虫控制排卵
B.
滴虫影响着床
C.
滴虫吞噬精子
D.
性交痛影响性生活
E.
宫颈管口紧闭
【判断题】In any language, speech sounds are classified into two kinds: vowels and consonants.()
A.
正确
B.
错误
【单选题】有线抄水表,就布线成本来说最低的是( )?
A.
M-bus
B.
RS-485
C.
ZigBee
D.
RS232
【单选题】下列不属于教学目标的设计误区的一项是( )。A.针对性差 B.不够全面 C.陈述具体 D.行为错位
A.
A
B.
B
C.
C
D.
D
【判断题】Sometimes the images on two LCDs and sounds through two earphones are slightly different so that the virtual world appears more real.
A.
正确
B.
错误
【单选题】进气歧管压力传感器应用较广泛的形式是 ( )。
A.
电容式
B.
半导体压敏电阻式
C.
表面弹性波式
D.
膜盒传动可变电感式
【简答题】渗透力是一种体积力,其大小和水力坡降(度)成 ,作用方向也同渗流场的水力坡降方向相 。
【单选题】If two sounds in a language make a contrast between two different words, such as[t]in tie and[d]in die, they are said to be different______.
A.
phones
B.
allophones
C.
phonemes
D.
consonants
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