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【单选题】
早期流产是指A.
流产发生于6
B.
流产发生于6-8
C.
流产发生于8-10
D.
流产发生在12
E.
流产发生在20周末以前
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举一反三
【单选题】How long does it take for damaged cells to heal?
A.
About one week.
B.
About two days.
C.
About ten days.
D.
About four weeks.
【单选题】听力原文：M: How long does it take for a letter to get to New York? W: It'll take five or six days. M: I want to register it. W: All right. It'll probably take a little longer to get there though. Where do...
A.
At a cinema．
B.
At a theatre．
C.
At a post office
【简答题】请听下面一段材料，回答第1至3题。 1. How long does it take to finish the job? [ ] A. Six days. B. Six weeks. C. Six months. 2. Which of the following isn't a reason for Nancy to take the job? [ ] A. She can e...
【单选题】有一安装施工单位承接了一单层装配式工业厂房安装任务，该厂房长120m，宽36m，柱距6m×12m。施工单位编制了起重吊装方案，并选派了一名有经验的工程师指挥了整个吊装作业。三个月后完成了全部的吊装作业，没有发生严重的质量事故和安全事故。起重机的主要性能参数不包括（）。
A.
起重量Q
B.
起重高度H
C.
工作幅度（回转半径）R
D.
起重臂长L
【单选题】听力原文：M: How long does it take for a letter to get to New York? W: It'll take five or six days. M: I want to register it. W: All right. It'll probably take a little longer to get there though. Where do...
A.
New York.
B.
New Zealand.
C.
Washington.
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