【单选题】Listen to the conversation and choose the best answer.
A.
These reference books might not be available in the library.
B.
These reference books are too difficult to understand.
C.
She needs only to depend on her experiences rather than reference books.
D.
She still needs reference to support her idea.
【简答题】游客从画店中购买了一幅近年国画,上题有“岁在戊寅昆戈画于北京并记”。已知购画之年(1999年)为己卯年,据此推算,该画创作于公元__________年。画上所用纪年方法称__________纪年法。
【单选题】关于妊娠期心脏病,以下说法错误的是:( )。
A.
对于心功能I、II级的孕妇,胎儿大小适中,产道条件良好,可选择阴道试产
B.
对于心功能III、IV级,建议剖宫产终止妊娠
【单选题】使用本地安全策略可以在( )中设置安全要求。
【单选题】Listen to the conversation and choose the best answer.
A.
Ask the dean to sign the name.
C.
Take the request to the infirmary .
D.
Arrange the class schedule.
【单选题】用液氮长期保藏菌种是因为液氮温度可达多少度,远远低于微生物新陈代谢作用停止的温度( )