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【判断题】
鸟类的双重呼吸保证氧气供应充足,有利于鸟类快速飞翔
A.
正确
B.
错误
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【单选题】You use a Windows 2000 Professional computer to run a weekly accounts table. The report has the name ap_financial_reports. You also want the use the computer to run a task named perf_log to connect to...
A.
Decrease the base priority of the ap_financial_reports task.
B.
Decrease the number of threads available for the ap_financial_reports task.
C.
Increase the base priority of the perf_log task.
D.
Increase the number of threats available for perf_log task.
【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
【单选题】Z3-01-02如图所示,子弹射入放在水平光滑地面上静止的木块而不穿出.以地面为参考系,下列说法中正确的说法是:【图片】
A.
子弹的动能转变为木块的动能.
B.
子弹动能的减少等于子弹克服木块阻力所作的功.
C.
子弹 ─ 木块系统的机械能守恒.
D.
子弹克服木块阻力所作的功等于这一过程中产生的热.
【单选题】The author believes that the devoted concertgoers______.
A.
ignore the expenses of live performances.
B.
reject most kinds of recorded performances.
C.
exaggerate the variety of live performances.
D.
overestimate the value of live performances.
【简答题】perf_ctly
【简答题】试将下列物理量换算为sI单位: 质量:1.5kgf·s 2 /m=______kg 密度:13.6g/cm 3 =______kg/m 3 压力:35kgf/cm 2 =______Pa 4.7atm=______Pa 670mmHg=______Pa 功率:10马力=______kW 比热容:2Btu/(1b·℉)=______J/(kg·K) 3kcal/(kg·℃)=______J/(kg·...
【简答题】Ferrari make __________ -perf ormance sports cars.
【简答题】The primary purpose of obedience training is to ________. A) teach the dog to perform. clever tricks B) make the dog aware of its owner’s authority C) provide the dog with outlets for its wild behavio...
【单选题】You use a Windows 2000 Professional computer to run a weekly accounts table. The report has the name ap_financial_reports. You also want to use the computer to run a task named perf_log to connect to ...
A.
Decrease the base priority of the ap_financial_reports task.
B.
Decrease the number of threads available for the ap_financial_reports task.
C.
Increase the base priority of the perf_log task.
D.
Increase the number of threats available for perf_log task.
【单选题】Z3-01-02如图所示,子弹射入放在水平光滑地面上静止的木块而不穿出.以地面为参考系,下列说法中正确的说法是:
A.
子弹的动能转变为木块的动能.
B.
子弹动能的减少等于子弹克服木块阻力所作的功.
C.
子弹─木块系统的机械能守恒.
D.
子弹克服木块阻力所作的功等于这一过程中产生的热.
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