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【单选题】
在计算机内部,传送、存储、加工处理的数据和指令都是( )。
A.
ASCII码
B.
二进制码
C.
拼音简码
D.
八进制码
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【简答题】Dear sir or madam, Thank you for your letter of May 12th, i____ us that you are in the m____ for Chinese bicycles. To give you a general idea of goods we are dealing i_____, we are sending you by air...
【单选题】The 9th amendment says that the rights not listed in the Bill of Rights are retained by the government.
A.
True
B.
False
【简答题】Two magazines recently listed the best cities to live in. Here are two of the cities listed as “the world’s best.” SAN JOSE, COSTA RICA  The city has comfortable weather all year round (15℃ to 26℃). H...
【简答题】Supply the missing words in the blanks of the following letter. The first letters are given. Dear Sirs, Thank you for your letter of March 6th, 2014, _i_______ for our tape recorders and your desire t...
【简答题】Ⅰ.如图1装置,用离子交换膜法电解饱和食盐水制烧碱.若X电极材料为金属钛网(表面有氧化物涂层),Y电极材料为碳钢网.阳离子交换膜只允许阳离子通过,而阻止阴离子和气体通过.分别收集两极产生的气体并通入淀粉KI溶液中.请回答下列问题: (1)能使淀粉KI溶液变蓝的是______(填“a”或“b”)气体; (2)其阳极的电极反应式为______,阴极的电极反应式为______; Ⅱ.如图2所示,甲、乙是...
【简答题】(12分)电解原理在化学工业中有广泛应用。右图表示一个电解池,其中a为电解质溶液, X、Y是两块电极板,通过导线与直流电源相连。请回答以下问题: (1)X的电极名称是 (填写“阳极”或“阴极”)。 (2)若X、Y都是惰性电极,a是饱和食盐水,实验开始时,同时在两边各滴入几滴酚酞试液,一段时间后,在X极附近观察到的现象是 ,Y极上的电极反应式为 (3)若X、Y都是惰性电极,a是CuSO 4 溶液,电...
【简答题】Li-SOCl 2 电池可用于心脏起搏器.该电池的电极材料分别为锂和碳,电解液是LiAlCl 4 —SOCl 2 .电池的总反应可表示为:4Li+2SOCl 2 ==='4LiCl' +S +SO 2 .请回答下列问题: (1)电池的负极材料为__________,发生的电极反应为__________________; (2)电池正极发生的电极反应为________________________...
【简答题】Study the uses of the conjunction "while" in th following sentences and put each into a category listed below. a. during the time that sth is happening b. at the same time as sth is happening c. as lo...
【单选题】压力容器必须同时具备的条件之一是:内直径大于或等于( )m,且容积大于或等于0.025m3
A.
0.1
B.
0.15
C.
0.2
D.
0.4
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