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【单选题】
超声探头的维护和保养措施，错误的是A.
避免探头撞击、落地
B.
用乙醇擦拭清洁探头
C.
不可采用高温蒸煮消毒探头
D.
避免用力牵拉、扭曲探头电缆线
E.
禁用液状石蜡做耦合剂
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皮皮学刷刷变学霸
举一反三
【单选题】After leaving home the writer began to feel______．
A.
she still needed her mother' s support
B.
it was her turn to take care of her mother
C.
her mother was sick and should see a doctor
D.
it was somewhat cruel to leave her mother alone at home
【单选题】As the time taken to change the wheel be came longer the writer began to feel more().
A.
sorry for the man and the girl.
B.
critical of the man and the girl
C.
unwilling to pay the man and the girl
D.
grateful towards the man and the girl
【简答题】What does the writer mean by "Slowly, the city began to breathe again"?
【单选题】The writer began to love her mother's desk ______.
A.
after mother died
B.
before she became a writer
C.
when she was a child
【简答题】The writer began to _______________ (视自己为) a person _____________ (对...负责)himself and others.
【单选题】The writer began to practise doing gym exercises off the diving board ________.
A.
in 1976
B.
in 1971
C.
in 1970
D.
in 1972
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