海船船员考试
单选题Approximately what percent of tank space should be left for expansion of oil due to possible temperature increase?（）A 1% to 3%B 1% to 2%C 4%D 2% to 4%
题目
1% to 3%
1% to 2%
4%
2% to 4%
相似问题和答案
第1题：
What is TRUE of pressure/vacuum valves?
A.They are designed to provide for the flow of small volumes of tank atmospheres caused by thermal variations in a cargo tank
B.They should operate in advance of the pressure/vacuum breakers
C.They should be kept in good working order by regular inspection and cleaning
D.All of the above
第2题：
You are planning to use the crude oil washing system on your tanker．What is required to prevent electrostatic buildup in the tanks ________．
A.The portable machines should be set at the proper drop for the first wash before the fixed machines are used
B.The tank used as the source for the tank cleaning machines should be debottomed for at least one meter
C.The inert gas system must reduce the oxygen content in the tank to at least 18%
D.The fixed machines must be operated simultaneously with the portable machines to equalize the electrostatic potential
第3题：
According to Figure 3, clasts and matrix particles having diameters greater than or equal to 0.5 mm made up approximately what percent of the total mass of the combined samples?
A.13%
B.33%
C.63%
D.83%
第4题：
A customer has an IBM System Storage DS8100 with 128 DDMs and needs to add additional capacity. What must be verified by the Business Partner during the visit to the computer room（）
- A、the space for the upgrade to a DS8700
- B、the space on the left of the DS8000 for an expansion frame
- C、the space on the right of the DS8000 for an expansion frame
- D、the space to install additional DDMs in the base frame
正确答案:C
第5题：
What is the Cisco recommended setting for the Cisco Unified Wireless Network WLC Voice Call Admission Control Max RF Bandwidth to support the Cisco Unified Wireless IP Phone 7921G?（）
- A、nominally 30 percent to best align with Cisco Unified Communications System recommendations
- B、100 percent to ensure that the VoWLAN calls can use all the available bandwidth, if needed
- C、system default of 75 percent
- D、40 to 60 percent
- E、voice CAC should be left disabled unless wired QoS is configured
正确答案:D
第6题：
What best describes for how long a gas-free test is good ________．
A.For as long as is indicated on the gas-free certificate
B.For the instant that it is made
C.Until valves in line with the tank or compartment are reopened
D.Until changes in temperature or pressure affect the vapor content in the space
第7题：
What is a cofferdam ________．
A.Tube fitted to an ullage hole
B.Area the product is loaded into
C.Void or empty space separating two tanks
D.Opening in the deck used for cleaning a tank
第8题：
A.Delay should be no more than 10 ms.
B.Loss should be no more than1 percent.
C.Jitter should be less then 40 ms.
D.Managed bandwidth is strongly recommended for voice control traffic.
第9题：
What are two design guidelines for VoIP networks？（）
- A、 Delay should be no more than 10 ms.
- B、 Loss should be no more than 1 percent.
- C、 Jitter should be less then 40 ms.
- D、 Managed bandwidth is strongly recommended for voice control traffic.
正确答案:B,D
第10题：
You are maintaining your OLTP database in Oracle10g. You have not set the warning level and critical level threshold values for space usage of the DATA1 tablespace. What will be the impact？（）
- A、 No warning level or critical level alert will be generated.
- B、 A warning level alert will never be generated， but a critical level alert will be generated when 97 percent space of the DATA1 tablespace is used.
- C、 A critical level alert will never be generated， but a warning level alert will be generated when 85 percent space of the DATA1 tablespace is used.
- D、 A warning level alert will be generated at 85 percent space usage of the DATA1 tablespace， and a critical level alert is generated at 97 percent space usage of the DATA1 tablespace.
正确答案:D