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问题 单项选择题

对不适合做水压试验的容器，如容器内不允许有微量残留液体，或由于结构原因不能充满水的容器，常规的做法是用（）代替液压试验。

A．真空度试验

B．气压试验

C．气密性试验

D．渗漏试验

答案

参考答案：B

选择题

200多名平均年龄36岁的科研人员，组成了“天河一号”的研发骨干队伍。在科学的人才机制推动下，人才的智力优势和团队的整体攻关优势得到了充分的发挥。这启示我们，自主创新关键靠  [ ]

A．团队合作精神

B．艰苦奋斗精神

C．不怕挫折、奋勇拼搏的精神

D．高水平的创新型人才队伍

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单项选择题

A Bluetooth device can be either a master or a slave and any of the devices within a ___30___can be the master. There is only one master and there can be up to ___31___ active slave devices at a time within a single network. In addition, a device may be a standby slave or a parked slave. There can be up to ___32___.parked slaves. If there are already maximum number of active slaves, then a parked slave must wait until one of the active slaves switches to ___33___ mode before it can become active. Within a network, all ___34___ communications are prohibited.

33（）

A. master

B. standby slave

C. parked slave

D. Active slave
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