题目内容

水囊引产适用的妊娠时间是()。

A. 妊娠10周以内
B. 妊娠10~14周
C. 妊娠15~24周
D. 妊娠25~32周
E. 妊娠32周以后

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管道带水补焊应选择()焊条。

A. 酸性
B. 碱性
C. 镍基
D. 不锈钢

Your company has a DNS server named Server1. Your partner company has a DNS server named Server2. You create a stub zone on Server1. The master for the stub zone is Server2. Server2 fails. You discover that users are not able to resolve names for the partner company. You need to ensure that users are able to resolve names for the partner company in the event that Server2 fails. What should you do?()

A. Change the stub zone to a secondary zone on Server1
B. Open the SOA record for the zone on Server2. Change the Minimum (default) TTL setting to 12 hours.
C. Open the DNS zone for the partner company on Server2. Create a new Route Through (RT) record and a new host (A) record for Server1.
D. Open the primary DNS zone on Server2. Create a new Service Locator (SRV) record and a new host(A) record for Server1.

勾缝后出现走缝主要是因为()。

A. 砂浆密实不够
B. 山石走动
C. 勾空缝
D. 养护不当

简述瑞士联邦委员会的地位和作用。

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