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【单选题】
【电梯国标】电梯国标中对电梯运行电压波动的要求是()A.
±10%
B.
±7%
C.
±15%
D.
±5%
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反馈参考答案：
举一反三
【单选题】脑脓肿有多种感染途径,最常见为血源性感染,其次为邻近组织感染向颅内蔓延,下列哪项属邻近组织感染向颅内蔓延感染途径
A.
脓毒血症致脑脓肿
B.
化脓性中耳乳突炎致脑脓肿
C.
颅脑开放性外伤致脑脓肿
D.
颅脑手术致脑脓肿
E.
不明原因的脑脓肿
【单选题】Before writing your name, how can you sign off your email?
A.
Ciao!
B.
Laters,
C.
Bye,
D.
Best regards,
【简答题】Before writing your article， ______， collect your material， and prepare an outline. B.a topic should be selected C.a topic to be selected D.your topic should be selected E.select a topic
【单选题】Before writing your article, ____, collect your material and prepare an outline.
A.
a topic should be selected
B.
a topic be selected
C.
your topic should be selected
D.
select a topic
【单选题】Before writing your answer, please give careful __ t o the question．
A.
consideration
B.
translation
C.
examination
D.
expression
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