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【判断题】
自动控制的基本方式有开环控制、闭环控制和复合控制A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】The price of the portable computers(手提电脑) is still so______that I can't afford to buy one.
A.
high
B.
low
C.
expensive
D.
dear
【单选题】The camera is expensive I can't afford it.
A.
so: that
B.
such: that
C.
so: as to
D.
enough: that
【单选题】I can't afford ________ a house like that because I am poor.
A.
to buy
B.
buying
C.
buy
D.
have bought
【单选题】The price is so _______ that I can't afford it. [ ]
A.
expensive
B.
cheap
C.
high
D.
low
【单选题】That coat fits me, but I can't afford to buy ________. I have to choose ________ that is cheap enough for me.
A.
one; that
B.
that; it
C.
it; one
D.
it; the one
【单选题】I can't afford that dress. It...
A.
is less expensive than the other one
B.
is too expensive
C.
isn't too expensive
D.
isn't pretty
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