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【简答题】
根据我国船员条例,船长在船舶()时,应当在驾驶台值班,必要时应当直接指挥船舶 1通过交通密集区域或危险区域, 2遇到能见度不良,恶劣气候和海况, 3发生保安 事件, 4遇到其他紧急情况 A. 1-3 B. 2-4 C. 1-4 D. 1 2 4
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皮皮学刷刷变学霸
举一反三
【单选题】肝性脑病时突触间隙γ-氨基丁酸(GABA)水平升高的机制是
A.
GABA释放增多且摄入减少
B.
肝脏清除GABA减少
C.
GABA不能穿过血脑屏障
D.
脑内GABA储存减少
E.
来自肠道的GABA增多
【单选题】Mother wants to be a good provider, a role she has been shouldering _____ her marriage to Father. [ ]
A.
when
B.
until
C.
before
D.
since
【简答题】Rosie's idyllic world came to an __________ end when her parents' marriage broke up.
【简答题】两个电阻串联, R 1 =200Ω , R 2 =300Ω,串联等效电阻 R= Ω 。
【简答题】目前，常见的智能手机操作系统有 、IOS和Windows Phone等。A. Android
【多选题】What did Mary Kay do when her first marriage ended?
A.
She took care of her children.
B.
She set up a cosmetic business on her own.
C.
She took premed courses at the University of Huston.
D.
She worked part time as secretary and sales representative.
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