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【单选题】
Read a passage and choose the best answer. The waiting service begins with the greeting and seating of the guests. In larger establishments guests may be received by a head waiter or supervisor and taken to the table (after checking reservations, etc.) where they are introduced to their table waiter, who takes over the responsibility for their service. In smaller restaurants a single waiter will be responsible for the whole operation. In either case the procedure is as follows: Acknowledge new guests as soon as they arrive. Approach the guests with an appropriate welcome, for example, "Good evening”. If the guests have come to eat, enquire whether they have a reservation. Check the reservation. When checking the reservation, note the host’s name- the table will usually have been reserved in the name of the host. It is important to establish who the host is.(The host may, of ourse, be female or male.) Show the guests to their table. Offer the guests chairs to encourage them to be seated. 1. After being taken to the table, the guests will be introduced to the
A.
head waiter
B.
supervisor
C.
table waiter
D.
wine waiter
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参考答案:
举一反三
【判断题】函数 定义域为[2,4]
A.
正确
B.
错误
【单选题】Which of the following pumps is most suitable for an oily water separator?
A.
reciprocating pump
B.
vane pump
C.
mono pump
D.
axial-flow pump
【简答题】oily water separator
【单选题】下列各种风险管理策略中,采用哪一种来降低非系统性风险最为直接、有效( )。
A.
风险分散
B.
风险对冲
C.
风险转移
D.
风险补偿
【单选题】The pressure difference of the gauge on the oily water separator increases greatly, the reason is____.
A.
the filter is clogged
B.
bilge suction value is clogged
C.
suction value and discharge value of the pump do not open fully
D.
screw pump is worn seriously and volumetric efficiency is decreased
【单选题】下列各种风险管理策略中,采用哪一种来降低非系统性风险最为直接、有效( A )。
A.
风险分散
B.
风险对冲
C.
风险转移
D.
风险补偿
【单选题】How is the oily water separator?
A.
It is in good order
B.
There is something wrong with it
C.
It is working well
D.
It is in normal condition
【单选题】对于自耦变压器,等值电路中各绕组的电阻,下述说法中正确的是( )。
A.
等值电路中各绕组的电阻,是各绕组实际电阻按照变压器变比归算到同一电压等级的电阻值;
B.
等值电路中各绕组的电阻一定为正值,因为绕组总有电阻存在。
C.
等值电路中各绕组的电阻就是各绕组的实际电阻;
D.
等值电路中各绕组的电阻是各绕组的等效电阻归算到同一电压等级的电阻值;
【单选题】对于自耦变压器,等值电路中各绕组的电阻,下述说法中正确的是( )。
A.
等值电路中各绕组的电阻,是各绕组实际电阻按照变压器变比归算到同一电压等级的电阻值
B.
C.
等值电路中各绕组的电阻就是各绕组的实际电阻
D.
E.
等值电路中各绕组的电阻是各绕组的等效电阻归算到同一电压等级的电阻值
F.
G.
等值电路中各绕组的电阻一定为正值,因为绕组总有电阻存在。
【简答题】已知函数f(x)=x 2 -4x-4。 (1)若函数定义域为[3,4],求函数值域; (2)若函数定义域为[-3,4],求函数值域; (3)当x∈[a-1,a]时,y的取值范围是[1,8],求a。
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