皮皮学，免费搜题
登录
搜题
【单选题】
对定时器T0进行关中断操作，需要复位中断允许寄存器的（ ）。A.
EA和ET0
B.
EA和EX0
C.
EA和ET1
D.
EA和EX1
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】I'm sorry to ______ too much of your time.
A.
take off
B.
have taken in
C.
take on
D.
have taken up
【单选题】I wish I______ longer this morning, but I had to get up and come to class.
A.
could have slept
B.
slept
C.
might have slept
D.
have slept
【简答题】静脉注射肘部常用的静脉是 静脉、 静脉、 静脉。