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【判断题】
直流发电机——直流电动机自动调速系统必须用启动变阻器来限制启动电流。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
【简答题】借别人的东西 _______ 要还的。 (老 总)
【单选题】A great person is someone who devotes his/her life ______others.
A.
to help
B.
helping
C.
to helping
D.
helped
【单选题】— What else did you do this morning besides doing the shopping? — Two hours ____ washing the windows and floor. [ ]
A.
were taken
B.
was spent
C.
has taken
D.
will be spent
【简答题】How old was the washwoman when she started washing for the narrator’s family? What did she look like?
【单选题】What did the founder of the cluv use to do?
A.
Washing dishes
B.
Being chef
C.
Selling lunch boxes
D.
Selling newpapers
【单选题】A great person is someone who devotes his/her life _____ others. [ ]
A.
to help
B.
helping
C.
to helping
D.
help
【单选题】What did the founder of the club use to do?
A.
Washing dishes
B.
Being chef
C.
Selling lunch boxes
D.
Selling newspapers
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