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A condition where two currents meet at the downstream end of

题目
单选题
A condition where two currents meet at the downstream end of a middle bar can be determined by a（）.
A

small whirlpool

B

smooth patch of water

C

V-shaped ripple with the point of the V pointing downstream

D

V-shaped ripple with the point of the V pointing upstream

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相似问题和答案

第1题：

Taking into consideration the transport condition ()your end, we have improed our packing so as to avoid damage to the goods.

A、in

B、on

C、with

D、at


参考答案：D

第2题：

以下语句错误的是：______ 。

A．Do while(Condition) Statements Loop

B．Do Statements Loop while(condition)

C．Do until(condition) Statements Loop

D．Do until(condition) Statements end do


正确答案：D

第3题：

Where did Jane and Rochester meet?()

A.on the bus

B.at home

C.on a muddy road

D.in a church


参考答案：C

第4题：

单选题
The joint formed when two steel plates are placed end-to-end is called a（）.
A

bevel

B

seam

C

butt

D

bond


正确答案： B
解析： 暂无解析

第5题：

Where is the （）aid equipment?

  • A、one
  • B、second
  • C、first
  • D、two

正确答案:C

第6题：

在SQL SELECT语句中用于实现关系的选择运算的短语是 A)FOR B)WHILE C)WHERE D)CONDITION


正确答案：C
本题考查对SQL语句中WHERE子句的理解。在SQL语句中，WHERE用来描述查询条件（即进行选择运算），SQL语句中没有FOR、CONDITION或WHILE等短语或关健字。故选项C为正确答案。

第7题：

Which two statements about subqueries are true? （）

  • A、A single row subquery can retrieve data from only one table.
  • B、A SQL query statement cannot display data from table B that is referred to in its subquery, unless table B is included in the main query's FROM clause.
  • C、A SQL query statement can display data from table B that is referred to in its subquery, without including table B in its own FROM clause.
  • D、A single row subquery can retrieve data from more than one table.
  • E、A single row subquery cannot be used in a condition where the LIKE operator is used for comparison.
  • F、A multiple-row subquery cannot be used in a condition where the LIKE operator is used for comparison.

正确答案:B,D

第8题：

Two old friends meet ____chance in the street.

A.by

B.on

C.at

D.for


参考答案：A

第9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.

正确答案:A,C

第10题：

单选题
The center line condition of the transmission shaft can be checked by（）
A

the border flange’s excursion and flection

B

the both end shafts line’s accordance

C

the border flange’s flection and the both end shafts line’s accordance

D

the border flange’s accordance and both end shafts flection degree


正确答案： A
解析： 暂无解析

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