皮皮学，免费搜题
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【判断题】
握手的时间应根据与对方的亲密程度而定，一般以1-3秒为宜。A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Mini-skirts first in __________the 1960s.
A.
caught on
B.
caught in
C.
caught out
D.
caught up
【简答题】简述便利店的特征有哪些?
【简答题】选取频率高于 1000Hz 的信号时 , 可选用 滤波器;抑制 50 Hz 的交流干扰时,可选用 滤波器;如果希望抑制 500 Hz 以下的信号 , 可选用 滤波器。
【单选题】The thief missed __ and __.
A.
to be caught; to break away
B.
being caught; breaking away
C.
to be caught; broke away
D.
being caught; broke away
【单选题】、 P2=~(0x01<
A.
左移1位
B.
移位后取反
C.
取反后只有一个为低电平
D.
左移i位后取反
【单选题】Mini-skirts first______in the 1960s.
A.
caught out
B.
caught in
C.
caught on
D.
caught up
【单选题】The boy () a cigarette in the bathroom by his mother.
A.
caught smoking
B.
was caught smoking
C.
caught to smoke
D.
was caught to smoke
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