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【单选题】
以下关于光纤的应用描述正确的是()A.
照明、、扫描、都属于光纤传像方面的应用。
B.
光纤通信必须要做好电磁干扰防护。
C.
利用光纤传递调制光信号，实现光通信是光纤传输线的主要应用。
D.
光纤传感器只能作为光学物理量的传感器。
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举一反三
【简答题】食品原料特性 (__);(__),原料一经采收或屠宰后即进入变质过程,品质不会随贮藏时间的延长而变好。
【单选题】We all agree that the young boy’s brave act _____ the highest praise.
A.
reserves
B.
deserves
C.
survives
D.
serves
【单选题】'The land of the free and the home of the brave,' these closing words of the U.S. national anthem, 'The Star Spangled Banner' (星条旗歌), sum up the ideals that many citizens of the United States have for...
A.
Freedom.
B.
Straggle.
C.
Equality.
D.
Solidarity.
【单选题】The army's brave fighting ______ in total victory.
A.
eliminated
B.
illuminated
C.
culminated
D.
dominated
【单选题】It was brave ________him to jump into the river to save the child and it’s important ________ him to help others.
A.
for; for
B.
of; of
C.
for; of
D.
of; for
【单选题】It's a brave kid. For wanting to come here. For wanting a quality education. An education denied him by the poor quality of the school he's attended. I tell you most kids with his background wouldn't ...
A.
Hidden Figures
B.
The Blind Side
C.
Green Book
D.
Far From The Madding Crowd
【单选题】The _____ soldiers fight against the enemies _____. [ ]
A.
brave, brave
B.
brave, bravely
C.
bravely, brave
D.
bravely, bravely
【单选题】It’s very brave _______ you ______ the boy out of the river. [ ]
A.
for, to save
B.
for, saving
C.
of, saving D. of, to save
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