海船船员考试

单选题Stability is determined principally by the location of the center of gravity and the（）.A aft perpendicularB center of buoyancyC keelD center of flotation

题目
单选题
Stability is determined principally by the location of the center of gravity and the（）.
A

aft perpendicular

B

center of buoyancy

C

keel

D

center of flotation

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相似问题和答案

第1题：

The author argues that（ ）

[A] AFDC regulations are to blame for family instability

[B] the agreement between couples reinforces martial stability

[C] expected AFDC income helps to strengthen family stability

[D] public assistance upsets the balance between benefit and cost of marriage


正确答案：D

第2题：

在最后进近过程中为垂直引导确定的一个下降剖面。（）

  • A、In the final approach a descent profile determined for vertical guidance.
  • B、In the final approach for vertical guidance of a descent profile determined.
  • C、A descent profile determined for vertical guidance during a final approach.
  • D、A descent profile during a final approach determined for vertical guidance .

正确答案:C

第3题：

[A] variation

[B] balance

[C] frequency

[D] stability


正确答案：C
28．C 【精析】variation变化；balance平衡；frequency频率；stability稳定。这里指的是潮汐电站只能规划建于潮汐发生频率高的河流入口处，故选C。

第4题：

稳定性（stability）


正确答案: 稳定性只由结构、参数决定，与初始条件及外作用无关。系统工作在平衡状态，受到扰动偏离了平衡状态，扰动消失之后，系统又恢复到平衡状态，称系统是稳定的。稳定是系统正常工作的先决条件。

第5题：

Regarding fast path processing, when does the system perform the policy check?（）

  • A、The policy is determined after the SCREEN options check.
  • B、The policy is determined only during the first packet path, not during fast path.
  • C、The policy is determined after the zone check.
  • D、The policy is determined after the SYN TCP flag.

正确答案:B

第6题：

Antiseptics are used principally to ______．

A.speed healing

B.prevent infection

C.reduce inflammation

D.increase blood circulation


正确答案：B

第7题：

You enabled the flashback logging feature， but you have not specified the location of the flash recovery area.  Which location would be used as the default location for the flash recovery area？（）

  • A、the location used for control files
  • B、the location used for redo log files
  • C、the location set by using $ORACLE_BASE
  • D、the location set by using $ORACLE_HOME
  • E、the location set by using CORE_DUMP_DEST
  • F、the location set by using BACKGROUND_DUMP_DEST

正确答案:C

第8题：

By saying "We shall know a word by the company it keeps," John Firth, a British linguist, means that the real meaning of a word －____________.

A is determined by a dictionary

B is determined by a native speaker

C is determined by its context

D is determined by a linguist


答案：C

第9题：

稳定指数（stability index（Lyzner index））


正确答案: 用以相对定量地预测水中碳酸钙沉淀或溶解倾向性的指数，用水在碳酸钙处于平衡条件下理论计算的PH值的两倍减去水的实际PH值之差表示。

第10题：

A company has a corporate office building that is used by 50 to 100 unique visitors each day for meetings. Users routinely report that they are unable to access the network with their laptops when visiting this location. The help desk reports that these users are not getting IP addresses automatically assigned. After an investigation， the server administrator has determined that the DHCP service is functioning， but a minimal number of addresses are available for lease. The building is on its own class Csubnet and has 250 addresses in the scope.  Which of the following represents a long term solution tothe problem？（）

  • A、 Manually delete address leases from DHCP.
  • B、 Create reservations in DHCP for users frequently visiting this location.
  • C、 Assign static IP addresses to visiting laptops.
  • D、 Reduce the lease duration in the DHCP scope options to one day.

正确答案:D

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