收油过程中发现跑油后，采取的措施是（）A、通知停止送油，将罐内油转出 B、关闭所有阀门

有以下程序main(){int Y=10；while(Y--)；printf("Y=％d＼n",Y)；}程序执行后的输出结果是【 】。

A．Y=0

B．Y=-1

C．Y=1

D．while构成无限循环

¹³¹I发射的β射线的射程是

A.<100μm

B.<200μm

C.200μm～1mm

D.>1mm

E.<10nm

Passage OneA recent study indicates that the “short sleepers” had been more or less average in their sleep needs until the men were in their teens. But at about age 15 or so, the men voluntarily began cutting down their nightly sleep time because of pressures from school, work, and other activities. These men tended to view their nightly periods of unconsciousness as bothersome interruptions in their daily routines.In general, these “short sleepers” appeared ambitious, active, energetic, cheerful, conformist in their opinions, and very sure about their career choices. They often held several jobs at once, or work fullor parttime while going to school. And many of them had a p urge to appear “normal” or “acceptable” to their friends and associates.When asked to recall their dreams, the “short sleepers” did poorly. More than this, they seemed to prefer not remembering. In similar fashion, their usual way of dealing with psychological problems was to deny that the problem existed, and then to keep busy in the hope that the trouble would go away.The sleep patterns of the “short sleepers” were similar to, but less extreme than, sleep patterns shown by many mental patients categorized as manic.The “long sleepers” were quite different indeed. According to the study, these young men had lengthy sleeps since childhood. They seemed to enjoy their sleep, protected it, and were quite concerned when they were occasionally deprived of their desired 9 hours of nightly bed rest. They tended to recall their dreams much better than did the “short sleepers”.Many of the “long sleepers” were shy, anxious, introverted, inhibited, passive, mildly depressed, and unsure of themselves (particularly in social situations). Several openly state that sleep was an escape from their daily problems.

According to the study, ().

A．many short sleepers need less sleep by nature

B．many short sleepers are obliged to reduce their nightly sleep time because they are busy with their work

C．long sleepers sleep a longer period of time during the day

D．many long sleepers preserve their sleeping habit formed during their childhood

气相色谱仪中与液相色谱仪的泵功能相类似的部件是（）。

A、进样口

B、电子流量控制器

C、色谱柱

D、PFPD检测器

如果问题重大，确实需要直接上级和更高层次的上级机关同时了解公文的内容时，可以采取 _______的行文方式来进行。( )

A．逐级行文

B．多级行文

C．越级行文

D．直达行文