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【单选题】
燃烧器的点火棒、指示灯、喷嘴、稳、滤油器和油泵过滤器应（）清洗一次。A.
每周
B.
每月
C.
每季度
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【单选题】The users of this new mobile phone can type in e-mails or long texts easily _______ they happen to be.
A.
where
B.
wherever
C.
what
D.
which
【单选题】One of the advantages with the new tool is that it is users ____. Users can handle it with less effort and more convenience. [ ]
A.
friendly
B.
good
C.
well
D.
pleased
【单选题】The type of installation “________” is selected by most users, the sof1be installed with the most common options.
A.
Typical
B.
Complete
C.
Custom
D.
Minimum
【单选题】The type of installation“(71)”is selected by most users, the software installed with the most common options.
A.
Typical
B.
Complete
C.
Custom
D.
Minimum
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