皮皮学，免费搜题
登录
搜题
【单选题】
室早的心电图表现不包括A.
QRS 波提前出现
B.
早搏的QRS波形态正常
C.
代偿间隙完全
D.
早搏的QRS波前无相关的P波
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】It ______ the Chinese people many years to build the Great Wall. [ ]
A.
spends
B.
costs
C.
paid
D.
took
【单选题】He didn’t succeed overnight. On the contrary, it was many years ______ his career took off.
A.
since
B.
that
C.
before
D.
after
【简答题】中英文输入法切换的快捷键是 。
【单选题】Many great changes _____ in Beijing in these years. [ ]
A.
took place
B.
have taken place
C.
have been taken place
D.
have happened
相关题目：