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【单选题】
NOTICE This morning we received complaints from a few tenants that the tap water was colored. Since our maintenance crew repaired some tanks and pipelines, this problem will not last long. However, Id like to give you a few tips of how to use the tap water. The discolored water is not a health threat. If you happen to drink some of the discolored water, it will not make you sick. Nevertheless, you are not encouraged to drink colored water. As the rust can stain clothing, it is best to wait several hours for the water to clear before doing any laundry. Also, do not use any hot water as you may draw this rusty water into your hot water tank, which may have to be flushed out later. If you were doing laundry when the water became discolored, rewash the laundry later when the water clears. Use a rust stain remover or regular detergent. Maintenance crew will clean the tanks again tomorrow, and we expect no new problems will occur. Due to this additional work, we have to suspend the water supply and close the swimming pool area from 9 a.m. to 4 p.m. tomorrow. Please keep all taps closed during the hours mentioned. If you notice that the water is still colored after the work has been done, please contact our apartment management office right away. We apologize for this inconvenience. Thank you. The Management For whom is this notice intended?
A.
Office workers
B.
Hotel guests
C.
Apartment residents
D.
Maintenance crew
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【简答题】试述多囊卵巢综合征(PCOS)的临床主要特征。
【多选题】房地产经纪机构与委托人签订房屋出售、出租经纪服务合同,应当查看( )。
A.
房屋权属证书
B.
委托人的身份证明
C.
合同文本
D.
出租房屋的实体
E.
委托人职业收入
【单选题】根据给定的条件,从一个关系中选出一个或多个元组构成一个新关系,这种操作称为( )。
A.
选择
B.
投影
C.
连接
D.
更新
【单选题】根据给定的条件,从一个关系中选出一个或多个元组构成一个新关系,这种操作称为( )
A.
更新
B.
选择
C.
投影
D.
连接
【单选题】多囊卵巢综合征的临床主要特征为()。
A.
雄激素过多
B.
持续无排卵
C.
A+B
D.
泌乳
E.
以上全不是
【单选题】The reservoirs that were built by China have the biggest reserve capacity in the world.
A.
Y
B.
N
C.
NG
【单选题】根据给定的条件,从一个关系中选出一个或多个元组构成一个新关系,这种操作称为( )。A.更新B.选择C.投影D.连接
A.
A
B.
B
C.
C
D.
D
【多选题】多囊卵巢的主要特征是
A.
头晕
B.
多毛、肥胖
C.
雄激素过多
D.
持续无排卵
【单选题】根据给定的条件,从一个关系中选出一个或多个元组,是( )关系运算
A.
选择
B.
投影
C.
连接
D.
交叉
【多选题】多囊卵巢综合征的主要特征有
A.
持续无排卵
B.
带下异常
C.
雄激素过多
D.
胰岛素抵抗
E.
性欲淡漠
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