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【单选题】
在乙酸乙酯皂化反应实验中,若反应物CH3COOC2H5,NaOH溶液均为0.010mol·dm-3,等体积混合后反应终态的电导率可用下列哪种溶液的电导率值代替( )
A.
0.010mol·dm-3NaOH
B.
0.005mol·dm-3NaOH
C.
(C) 0.005mol·dm -3 CH 3 COOH
D.
0.005mol·dm -3 CH 3 COONa
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皮皮学刷刷变学霸
举一反三
【单选题】胰尾矢状断面的定位标志是( )
A.
腹主动脉
B.
脾静脉
C.
肠系膜上静脉
D.
下腔静脉
E.
脊柱左缘
【简答题】番茄的表皮有保护作用,属于______组织,而对人体和动物起保护作用的属于______组织.
【单选题】Winston Churchill's famous saying “We shall not flag or fail” was said __________.
A.
after the Allied evacuation at Dunkirk in 1940
B.
before the founding of the People's Republic of China
C.
after the 9/11 attacks
【单选题】以下不能作为细菌的分类依据的有_______。
A.
球菌的排列方式
B.
杆菌的排列方式
C.
细菌是否产生芽胞
D.
细菌细胞的形态
【简答题】Part I--Paras. 1-2 By using Winston Churchill's story and his speech at Harrow as an introduction to the topic, the text makes clear its statement: the secret of success is "______ _____ _______".
【单选题】Winston Churchill's __________ and stirring rhetoric, employed in many famed speeches, is seen as representing the spirit of wartime Britain.
A.
evocative
B.
provocative
C.
discouraging
D.
discouraged
【单选题】下列()是表示易燃液体燃爆危险性的一个重要指标。
A.
闪点
B.
凝固点
C.
自燃点
D.
沸点
【简答题】Based on the speech we learn in this unit and Churchill's inaugural address, what have you known about Winston Churchill?
【单选题】以主题的形式来选择和组织课程或活动的内容是()
A.
分层设计
B.
主题设计
C.
模块设计
D.
单元设计
【简答题】Match the years with the s in Winston Churchill's political career according to the text. 1900 ---- a Tory (1) ________________ 1911 ---- (2) _______________ of the Admiralty 1920s ---- (3)___...
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