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【单选题】
使用perf工具的哪个命令可以即时查看整个系统中各个程序的综合profiling统计
A.
perf top
B.
perf record
C.
perf report
D.
perf stat
拍照语音搜题，微信中搜索"皮皮学"使用
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知识点：
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举一反三
【多选题】桥接模式的优点（）
A.
分离抽象接口及其实现部分
B.
桥接模式提高了系统的可扩充性，在两个变化维度中任意扩展一个维度，都不需要修改原有系统
C.
实现细节对客户透明，可以对用户隐藏实现细节
D.
桥接模式的引入会增加系统的理解与设计难度
E.
桥接模式要求正确识别出系统中两个独立变化的维度，因此其使用范围具有一定的局限性
查看完整题目与答案
【多选题】甲公司是一家产品制造企业,并属于一般纳税人,2016年10月20日,甲公司售出商品100件,每件商品售价300元,适用的增值税税率为17%,货款收起,也符合销售收入的确认条件,每件商品的成本为200元,12月25日,由于产品规格与合同略有出入,甲公司同意给予客户10%的价格减让,并向客户开具了增值税专用发票(红字),同时向客户退款。则甲公司下列做法中错误的是( )
A.
冲减12月份的销售收入3000元
B.
冲减12月份的销售成本2000元
C.
冲减10月份的销售收入3000元
D.
冲减10月份的销售成本2000元
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【单选题】听力原文：M: Hello. Will you please send someone up to my apartment? The hot water is running. And I can't turn it off. W: There's no one in the office right now. I'll send someone up as soon as I can. Why...
A.
There was no hot water.
B.
There was no heat.
C.
The hot water was running.
D.
The light couldn't be turned off.
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【判断题】[普化1] 由于CaCO3固体的分解反应是吸热的,故它的标准摩尔生成焓是负值。( )
A.
正确
B.
错误
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【简答题】(10) ____(you please check) that you (11) ____(receive) it, and if you haven’t, please send me another application form. If, on the other hand, you (12) ____(receive) my application but (13) ____(not ...
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【简答题】用库仑滴定法测定水中苯酚的含量。将50．00 mL含苯酚的试液放入烧杯中，再加入一定量的HCl和0．1000 mol?L-1NaBr溶液，由电解产生Br2来滴定C6H5OH 电流强度为8．50 mA，到达终点所需时间250 s，试计算试液中苯酚的浓度为多少?(以mg?L-1为单位，已知M(苯酚)=94．1 1 g?mol-1)
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【单选题】葡萄胎清宫术后,尿妊娠试验由阴性转为阳性时一般考虑为
A.
病情好转
B.
残留
C.
妊娠
D.
侵蚀性葡萄胎
E.
绒癌
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【单选题】听力原文：M: Hello. Will you please send someone up to my apartment? The hot water is running. And I can't turn it off. W: There's no one in the office right now. I'll send someone up as soon as I can. Why...
A.
There was no hot water.
B.
The light couldn't be turned off.
C.
There was no heat.
D.
The hot water was running.
查看完整题目与答案
【单选题】听力原文：Please send your e-mails in English. There is something wrong with my computer, which now cannot read Chinese. Why does the speaker ask the addressee to write in English?
A.
Because the speaker cannot read Chinese.
B.
Because English is the working language.
C.
Because Chinese cannot be displayed properly in the speaker's computer.
D.
Because English is the language in which the speaker's computer is designed.
查看完整题目与答案
【简答题】Hello, are you______?I'v been waiting for a long time. Hello, I'm not in front of the computer right now. Please just________. Let me________ the stock. I will be back in a moment. some customers wi...
查看完整题目与答案
相关题目：
【多选题】桥接模式的优点（）
A.
分离抽象接口及其实现部分
B.
桥接模式提高了系统的可扩充性，在两个变化维度中任意扩展一个维度，都不需要修改原有系统
C.
实现细节对客户透明，可以对用户隐藏实现细节
D.
桥接模式的引入会增加系统的理解与设计难度
E.
桥接模式要求正确识别出系统中两个独立变化的维度，因此其使用范围具有一定的局限性
查看完整题目与答案
【多选题】甲公司是一家产品制造企业,并属于一般纳税人,2016年10月20日,甲公司售出商品100件,每件商品售价300元,适用的增值税税率为17%,货款收起,也符合销售收入的确认条件,每件商品的成本为200元,12月25日,由于产品规格与合同略有出入,甲公司同意给予客户10%的价格减让,并向客户开具了增值税专用发票(红字),同时向客户退款。则甲公司下列做法中错误的是( )
A.
冲减12月份的销售收入3000元
B.
冲减12月份的销售成本2000元
C.
冲减10月份的销售收入3000元
D.
冲减10月份的销售成本2000元
查看完整题目与答案
【单选题】听力原文：M: Hello. Will you please send someone up to my apartment? The hot water is running. And I can't turn it off. W: There's no one in the office right now. I'll send someone up as soon as I can. Why...
A.
There was no hot water.
B.
There was no heat.
C.
The hot water was running.
D.
The light couldn't be turned off.
查看完整题目与答案
【判断题】[普化1] 由于CaCO3固体的分解反应是吸热的,故它的标准摩尔生成焓是负值。( )
A.
正确
B.
错误
查看完整题目与答案
【简答题】(10) ____(you please check) that you (11) ____(receive) it, and if you haven’t, please send me another application form. If, on the other hand, you (12) ____(receive) my application but (13) ____(not ...
查看完整题目与答案
【简答题】用库仑滴定法测定水中苯酚的含量。将50．00 mL含苯酚的试液放入烧杯中，再加入一定量的HCl和0．1000 mol?L-1NaBr溶液，由电解产生Br2来滴定C6H5OH 电流强度为8．50 mA，到达终点所需时间250 s，试计算试液中苯酚的浓度为多少?(以mg?L-1为单位，已知M(苯酚)=94．1 1 g?mol-1)
查看完整题目与答案
【单选题】葡萄胎清宫术后,尿妊娠试验由阴性转为阳性时一般考虑为
A.
病情好转
B.
残留
C.
妊娠
D.
侵蚀性葡萄胎
E.
绒癌
查看完整题目与答案
【单选题】听力原文：M: Hello. Will you please send someone up to my apartment? The hot water is running. And I can't turn it off. W: There's no one in the office right now. I'll send someone up as soon as I can. Why...
A.
There was no hot water.
B.
The light couldn't be turned off.
C.
There was no heat.
D.
The hot water was running.
查看完整题目与答案
【单选题】听力原文：Please send your e-mails in English. There is something wrong with my computer, which now cannot read Chinese. Why does the speaker ask the addressee to write in English?
A.
Because the speaker cannot read Chinese.
B.
Because English is the working language.
C.
Because Chinese cannot be displayed properly in the speaker's computer.
D.
Because English is the language in which the speaker's computer is designed.
查看完整题目与答案
【简答题】Hello, are you______?I'v been waiting for a long time. Hello, I'm not in front of the computer right now. Please just________. Let me________ the stock. I will be back in a moment. some customers wi...
查看完整题目与答案