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【单选题】
洗胃时胃管插入的深度是:A.
40～45cm
B.
45～55cm
C.
55～60cm
D.
60～65cm
E.
65～70cm
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反馈参考答案：
举一反三
【单选题】-- Have you moved into the new house? -- Not yet. The rooms __________. [ ]
A.
are painting
B.
are being painted
C.
are painted
D.
have painted
【单选题】--Have you moved into the new house? --Not, yet. The rooms ______ now.
A.
were painted
B.
have painted
C.
are being painted
D.
are painting
【简答题】B2B电子商务的组成要素有哪些?
【单选题】— Have you moved into the new house? — Not yet, the rooms _________. [ ]
A.
are being painted
B.
are painting
C.
are painted
D.
have been painted
参考解析：
知识点：
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