网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
单选题
A V-shaped ripple with the point of the V pointing upstream in a river may indicate a（）.
A
submerged rock，not dangerous to navigation
B
sunken wreck，not dangerous to navigation
C
towed-under buoy
D
All of the above
参考答案
参考解析
解析：
暂无解析
更多 “单选题A V-shaped ripple with the point of the V pointing upstream in a river may indicate a（）.A submerged rock，not dangerous to navigationB sunken wreck，not dangerous to navigationC towed-under buoyD All of the above” 相关考题
考题
Restricted areas at locks and dams are indicated by ______.A.flashing red lights upstream and fixed red lights downstremB.yellow unlighted buoysC.signs and / or flashing red lightsD.red daymarks upstream and green daymarks downstream
考题
有如下程序:include using namespace std;class point{int x, y;public:point( int v
有如下程序：#include ＜iostream＞using namespace std;class point{ int x, y;public: point( int vx, int vy ) { X=vx; y=vy; } point() { x=0; y=0; } point operator+ ( point p1 ) { point p; int px = x + p1.x; int py = y+ p1.y; return point( px, py ); } point operator-( point p1 { point p; int px = x - p1.x; int py = y - p1.y; return point( px, py ); } void print() { cout＜＜x＜＜","＜＜y＜＜end1; }};int main(){ point p1( 10, 10 ), p2( 20, 20 ); p1 = p1 + p2; p1.print(); return ();}执行后的输出结果是( )。A．10, 10B．20, 20C．10, 20D．30, 30
考题
BGP route dampening is configured on a BGP router.Whose routing behavior is affected by this configuration?()
A. upstream EBGP neighborsB. downstream EBGP neighborsC. upstream IBGP neighbors learned by IBGP peersD. downstream IBGP neighbors learned by IBGP peers
考题
How should you signal the crane operator to hoist ________．A.With forearm vertical and forefinger pointing up，move hand in small horizontal circlesB.With arm extended downwards and forefinger pointing down，move hand in small horizontal circlesC.Extend arm with fingers closed and thumb pointing upwardD.Place both fists in front of body with the thumbs pointing upward
考题
How should you signal the crane operator to lower the boom and raise the load ________．A.Extend arm and point finger in the direction to move the boomB.Extend arm with thumb pointing downward and flex fingers in and outC.With forearm vertical and forefinger pointing up，move hand in small horizontal circlesD.With arm extended downwards and forefinger pointing down，move hand in small horizontal circles
考题
A V-shaped ripple with the point of the V pointing upstream in a river may indicate a _____.A.submerged rock, not dangerous to navigationB.broken wreck, not dangerous to navigationC.towed-under buoyD.All of the above
考题
How should you signal the crane operator to lower the boom?______.A.With arm extended and fingers closed, point thumb downwardB.With arm extended downwards and forefinger pointing down, move hand in small horizontal circlesC.Extend arm with the palm down, and hold this position rigidlyD.With hands clasped in front of your body
考题
How should you signal the crane operator to raise the boom?_________.A.Extend arm with the thumb pointing up and flex the fingers in and outB.Place both fists in front of the body with the thumbs pointing upwardC.With forearm vertical and forefinger pointing up，move hand in small horizontal circlesD.Extend arm with fingers closed and point thumb upward
考题
What is the effect of turning on all available downstream carrier tones in a DMT DSL transmissionsystems？（）A、Downstream RS error correction effectiveness is reducedB、The downstream line rate and throughput remains unchanged， but FEC efficiency is reducedC、The upstream DSL bandwidth is reduced， since less carriers become available for upstream trafficD、The downstream DSL bandwidth is increased
考题
In a Cisco Unified Computing System， What is the "designated receiver" port in end-host mode used for？（）A、 Sending all broadcastsB、 Receiving all traffic from upstream switchesC、 Receiving broadcast trafficD、 Negotiating spanning tree with upstream switchesE、 Learning MAC addresses from upstream switches
考题
Which two statemets are true？（）A、DPT/RPR uses a bi-directional ring consisting of two symmetric counter rotating fibre rings.B、DPT/RPR is defined in the IEEE 802.17 standard and it uses Token Bucket system to avoid collisions on the fiber.C、In DPT/RPR rings， data packets can be sent in one direction （downstream） and the corresponding control packets in the opposite direction （upstream），thus using both fibres concurrently to maximise bandwidth.D、DPT/RPR can be deployed in the Core of the SP networks where point-to-point POS links are used tomake best use of the Bandwidth.
考题
单选题A condition where two currents meet at the downstream end of a middle bar can be determined by a（）.A
small whirlpoolB
smooth patch of waterC
V-shaped ripple with the point of the V pointing downstreamD
V-shaped ripple with the point of the V pointing upstream
考题
单选题How should you signal the crane operator to raise the boom?（）.A
Extend arm with the thumb pointing up and flex the fingers in and outB
Place both fists in front of the body with the thumbs pointing upwardC
With forearm vertical and forefinger pointing up,move hand in small horizond circlesD
Extend arm with the fingers closed and thumb upward
考题
单选题A snag or other underwater obstruction may form a（）.A
V-shaped ripple with the point of the V pointing upstreamB
V-shaped ripple with the point of the V pointing downstreamC
small patch of smooth water on a windy dayD
smoothing out of the vessel's wake
考题
单选题How should you signal the crane operator to swing?（）.A
With both arms extended out and palms to down, move arms back and forthB
With arm ertended downwards and forefinger pointing down,move hand in small horizontal creclesC
Extend arm and point finger in the direction to move boomD
Place both fists in front of the body with the thumbs pointing outward
考题
单选题How should you signal the crane operator to lower the boom and raise the load（）.A
Extend arm and point finger in the direction to move the boomB
Extend arm with thumb pointing downward and flex fingers in and outC
With forearm vertical and forefinger pointing up，move hand in small horizontal circlesD
With arm extended downwards and forefinger pointing down，move hand in small horizontal circles
考题
单选题How should you signal the crane operator to hoist（）.A
With forearm vertical and forefinger pointing up，move hand in small horizontal circlesB
With arm extended downwards and forefinger pointing down，move hand in small horizontal circlesC
Extend arm with fingers closed and thumb pointing upwardD
Place both fists in front of body with the thumbs pointing upward
考题
单选题In a Cisco Unified Computing System， What is the "designated receiver" port in end-host mode used for？（）A
Sending all broadcastsB
Receiving all traffic from upstream switchesC
Receiving broadcast trafficD
Negotiating spanning tree with upstream switchesE
Learning MAC addresses from upstream switches
考题
多选题Which two statemets are true？（）ADPT/RPR uses a bi-directional ring consisting of two symmetric counter rotating fibre rings.BDPT/RPR is defined in the IEEE 802.17 standard and it uses Token Bucket system to avoid collisions on the fiber.CIn DPT/RPR rings， data packets can be sent in one direction （downstream） and the corresponding control packets in the opposite direction （upstream），thus using both fibres concurrently to maximise bandwidth.DDPT/RPR can be deployed in the Core of the SP networks where point-to-point POS links are used tomake best use of the Bandwidth.
考题
单选题A solenoid valve used in a refrigeration system should be installed （）.A
with the axis of the solenoid horizontal, sensing temperature of the box, and upstream of the thermal expansion valveB
upright, sensing temperature of the box, and upstream of the thermal expansion valveC
upright, sensing temperature of the box, and downstream of the thermal expansion valveD
upright, sensing heat of the tail coil, and upstream of the thermal expansion valve
考题
单选题Restricted areas at locks and dams are indicated by（）.A
flashing red lights upstream and fixed red lights downstreamB
yellow unlighted buoysC
signs and/or flashing red lightsD
red daymarks upstream and green daymarks downstream
考题
单选题What must be true about the client before upstream traffic stream metrics can be displayed on the Cisco WLC?（）A
must be Cisco Compatible Extensions version 2B
must be Cisco Compatible Extensions version 3C
must be Cisco Compatible Extensions version 4D
must be associated to a Platinum QoS WLANE
must be associated to an access point on a Cisco WLC with code version 5.0 or newer
考题
单选题Which statement is FALSE concerning Concatenation？（）A
It allows ITCM to send multiple upstream packets in one single large burst.B
It reduces upstream data throughput.C
It can be enabled/disabled from CMTS on per upstream port basis if desiredD
Concatenation activity on an interface can be checked by the show controller counters command
热门标签
最新试卷