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【单选题】
● 某系统集成商现正致力于过程改进，打算为过去的项目建立历史档案，现阶段完成该工作的最好方法是（54） 。 （54）
A.
建立项目计划
B.
总结经验教训
C.
绘制网络图
D.
制定项目状态报告
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参考答案：
举一反三
【单选题】He returned from abroad ______________ that his mother had been badly ill.
A.
heard
B.
having been heard
C.
having phoned
D.
having been phoned
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【多选题】In order to use office facilities properly, what kind of things you should do and should not do? Classify the statements A to L into the two columns based on your common sense.
A.
Enter your copier access code when using the copy machine.
B.
Put the paper wastes into the bin for recycling.
C.
Leave the door of the copy room open, when there is a meeting or people working next door.
D.
Use the meeting room (or seminar room)without booking in advance.
E.
Tidy up the meeting room and staff room after using and put everything back to where it was.
F.
Leave the words on the white board and leave the lights and the computer and other electronic facilities on when leaving the meeting room.
G.
Wash the cups, plates or forks, etc. after using in the kitchen,
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【单选题】听力原文：M: I can't understand why Mary didn't at least telephone me. W: She did. Didn't I tell you? She said she was sorry she could not come for dinner, but hoped to be able to next time she came to tow...
A.
Mary would not call the woman again.
B.
Mary didn't call.
C.
Mary would call next time she came to town.
D.
That she hoped to come for dinner next time she came to town.
查看完整题目与答案
【简答题】（6分）甲、乙、丙、丁是1～18号元素，乙元素原子有三个电子层，第一层与最外层电子数相等；甲元素原子的核外电子数比乙元素原子核外电子数少1；丙元素原子的最外层电子数是次外层电子数的2倍；丁元素原子核电荷数比丙元素原子核电荷数多2。请回答： （1）甲的单质与水反应的化学方程式为 ； （2）乙元素的原子结构示意图为 ； （3）丙元素的最高价氧化物可以和甲与丁两种元素形成的某种化合物反应生成丁单质，每生...
查看完整题目与答案
【简答题】（一）X、Y、Z、L、M五种元素的原子序数依次增大，X的阴离子与Y的内层电子数相等，Y原子的最外层电子数是次外层电子数的两倍，Z、L是空气中含量最多的二种元素，M是地壳中含量最高的金属元素．回答下列问题： （1）L的元素名称为______；五种元素的原子半径从小到大的顺序是（用元素符号表示）______． （2）Z、X两元素按原子数目比1：3和2：4构成分子A和B，用电子式表示A的形成过程____...
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【单选题】听力原文：Why didn't they go to the restaurant at the Student Center? (7)
A.
They decided that they did not want any coffee.
B.
They thought that the Student Center would be closed.
C.
They thought that the Student Center would be crowded.
D.
The man lost his money in the vending machine.
查看完整题目与答案
【单选题】X、Y、Z、W是前20号元素，原子序数依次增大。X是原子半径最小的元素；Y元素原子的最外层电子数是电子层数的2倍；Z元素的-1价阴离子的核外电子排布与氖原子相同，W元素为金属，它的某种化合物可用于烟气脱硫。下列说法错误的是
A.
X、Y形成的化合物中可能含有双键
B.
X单质和Z单质在暗处能剧烈反应
C.
W元素与Z元素形成的化合物用电子式表示形成过程为：
D.
XZ的沸点在与Z同族的其它X的化合物中最高
查看完整题目与答案
【单选题】下列几项中,不符合 RISC 指令系统的特点是( )。
A.
指令长度固定，指令种类少
B.
寻址方式种类尽量减少，指令功能尽可能强
C.
增加寄存器的数目，以尽量减少访存次数
D.
选取使用频率最高的一些简单指令，以及很有用但不复杂的指令
查看完整题目与答案
【单选题】听力原文：Why didn't you study for the test? (A) They're good students. (B) Because it was a test. (C) I was too tired to study. (18)
A.
B.
查看完整题目与答案
【单选题】下列几项描述中,不符合RISC指令系统的特点是( )。
A.
指令长度固定，指令种类少
B.
寻址方式种类尽量减少，指令功能尽可能强
C.
增加寄存器的数量，以尽量减少访存次数
D.
选取使用频率高的一些简单指令，以及很有用但不负责的指令
查看完整题目与答案
相关题目：
【单选题】He returned from abroad ______________ that his mother had been badly ill.
A.
heard
B.
having been heard
C.
having phoned
D.
having been phoned
查看完整题目与答案
【多选题】In order to use office facilities properly, what kind of things you should do and should not do? Classify the statements A to L into the two columns based on your common sense.
A.
Enter your copier access code when using the copy machine.
B.
Put the paper wastes into the bin for recycling.
C.
Leave the door of the copy room open, when there is a meeting or people working next door.
D.
Use the meeting room (or seminar room)without booking in advance.
E.
Tidy up the meeting room and staff room after using and put everything back to where it was.
F.
Leave the words on the white board and leave the lights and the computer and other electronic facilities on when leaving the meeting room.
G.
Wash the cups, plates or forks, etc. after using in the kitchen,
查看完整题目与答案
【单选题】听力原文：M: I can't understand why Mary didn't at least telephone me. W: She did. Didn't I tell you? She said she was sorry she could not come for dinner, but hoped to be able to next time she came to tow...
A.
Mary would not call the woman again.
B.
Mary didn't call.
C.
Mary would call next time she came to town.
D.
That she hoped to come for dinner next time she came to town.
查看完整题目与答案
【简答题】（6分）甲、乙、丙、丁是1～18号元素，乙元素原子有三个电子层，第一层与最外层电子数相等；甲元素原子的核外电子数比乙元素原子核外电子数少1；丙元素原子的最外层电子数是次外层电子数的2倍；丁元素原子核电荷数比丙元素原子核电荷数多2。请回答： （1）甲的单质与水反应的化学方程式为 ； （2）乙元素的原子结构示意图为 ； （3）丙元素的最高价氧化物可以和甲与丁两种元素形成的某种化合物反应生成丁单质，每生...
查看完整题目与答案
【简答题】（一）X、Y、Z、L、M五种元素的原子序数依次增大，X的阴离子与Y的内层电子数相等，Y原子的最外层电子数是次外层电子数的两倍，Z、L是空气中含量最多的二种元素，M是地壳中含量最高的金属元素．回答下列问题： （1）L的元素名称为______；五种元素的原子半径从小到大的顺序是（用元素符号表示）______． （2）Z、X两元素按原子数目比1：3和2：4构成分子A和B，用电子式表示A的形成过程____...
查看完整题目与答案
【单选题】听力原文：Why didn't they go to the restaurant at the Student Center? (7)
A.
They decided that they did not want any coffee.
B.
They thought that the Student Center would be closed.
C.
They thought that the Student Center would be crowded.
D.
The man lost his money in the vending machine.
查看完整题目与答案
【单选题】X、Y、Z、W是前20号元素，原子序数依次增大。X是原子半径最小的元素；Y元素原子的最外层电子数是电子层数的2倍；Z元素的-1价阴离子的核外电子排布与氖原子相同，W元素为金属，它的某种化合物可用于烟气脱硫。下列说法错误的是
A.
X、Y形成的化合物中可能含有双键
B.
X单质和Z单质在暗处能剧烈反应
C.
W元素与Z元素形成的化合物用电子式表示形成过程为：
D.
XZ的沸点在与Z同族的其它X的化合物中最高
查看完整题目与答案
【单选题】下列几项中,不符合 RISC 指令系统的特点是( )。
A.
指令长度固定，指令种类少
B.
寻址方式种类尽量减少，指令功能尽可能强
C.
增加寄存器的数目，以尽量减少访存次数
D.
选取使用频率最高的一些简单指令，以及很有用但不复杂的指令
查看完整题目与答案
【单选题】听力原文：Why didn't you study for the test? (A) They're good students. (B) Because it was a test. (C) I was too tired to study. (18)
A.
B.
查看完整题目与答案
【单选题】下列几项描述中,不符合RISC指令系统的特点是( )。
A.
指令长度固定，指令种类少
B.
寻址方式种类尽量减少，指令功能尽可能强
C.
增加寄存器的数量，以尽量减少访存次数
D.
选取使用频率高的一些简单指令，以及很有用但不负责的指令
查看完整题目与答案
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