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【單選題】
小明發現學校路燈有時由于沒有及時關閉而浪費用電，為此他設計了一個控制方案，能夠在天亮時關閉，天暗后打開。該控制系統應該屬于（ ）。
A.
自動控制的閉環控制系統
B.
自動控制的開環控制系統
C.
手動控制的閉環控制系統
D.
手動控制的開環控制系統
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【單選題】Song Siyu got some achievements in the military school except _____.
A.
taking a bath in a short time
B.
having his meal with his eyes closed
C.
taking unreasonable criticism
D.
improving his character
【單選題】The underlined sentence means that _____
A.
Song sent his only son to military school, so he feels lonely.
B.
Song is the only one who sends his child t to military school.
C.
There are other people sending their children to military school besides Song.
D.
The fee of the military school is so high that only Song can afford it.
【單選題】What is the man going to take to the party?
A.
A pizza.
B.
Some chocolate.
C.
Some biscuits.
【單選題】From the second paragraph, we can know the old Chinese saying _____.
A.
is out of date in modern times.
B.
is disagreed by rich parents.
C.
is still worth trusting
D.
is deeply believed by better educated parent.
相關題目：
【單選題】Song Siyu got some achievements in the military school except _____.
A.
taking a bath in a short time
B.
having his meal with his eyes closed
C.
taking unreasonable criticism
D.
improving his character
【單選題】The underlined sentence means that _____
A.
Song sent his only son to military school, so he feels lonely.
B.
Song is the only one who sends his child t to military school.
C.
There are other people sending their children to military school besides Song.
D.
The fee of the military school is so high that only Song can afford it.
【單選題】What is the man going to take to the party?
A.
A pizza.
B.
Some chocolate.
C.
Some biscuits.
【單選題】From the second paragraph, we can know the old Chinese saying _____.
A.
is out of date in modern times.
B.
is disagreed by rich parents.
C.
is still worth trusting
D.
is deeply believed by better educated parent.
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