[单项选择]Customers may also be permitted to ______ their current accounts for a short period in anticipation of a credit item coming in.
A. overextend
B. overdraw
C. overvalue
D. overpay

[单项选择]Customers may also be permitted to ______ their current accounts for a short period in anticipation of a credit item coming in.
A. overextend
B. overdraw
C. overvalue
D. overpay

[单项选择] Examine the description of the CUSTOMERS table: CUSTOMER_ID NUMBER(4) NOT NULL CUSTOMER_NAME VARCHAR2(100) NOT NULL STREET_ADDRESS VARCHAR2(150) CITY_ADDRESS VARCHAR2(50) STATE_ADDRESS VARCHAR2(50) PROVINCE_ADDRESS VARCHAR2(50) COUNTRY_ADDRESS VARCHAR2(50) POSTAL_CODE VARCHAR2(12) CUSTOMER_PHONE VARCHAR2(20) The CUSTOMER_ID column is the primary key for the table. Which statement returns the city address and the number of customers in the cities Los Angeles or San Francisco?（）
A. SELECT city_address, COUNT(*) FROM customers WHERE city _ address IN ('Los Angeles','San Fransisco');
B. SELECT city_address, COUNT (*) FROM customers WHERE city address IN ( 'Los Angeles', 'San Fransisco') GROUP BY city_address;
C. SELECT city_address, COUNT(customer_id) FROM customers WHERE city_address IN ( 'Los Angeles', 'San Fransisco') GROUP BY city_address, customer_ id;
D. SELECT city_address, COUNT (customer_id) FROM customers GROUP BY city_ address IN ('Los Angeles','San Fransisco');

[单项选择]Customers trading abroad in foreign currencies may protect against the exchange risk by arranging ______.
A. a contract of international sale of goods
B. a contract of marine insurance
C. a forward contract to fix the exchange rate in advance
D. contract for the delivery of goods by installment

[单项选择]Why a democracy on every decision may also cause problems
A. It creates few opportunities for employees.
B. It is controlled within the family.
C. Small committees have to be set up.
D. Sometimes there are too many people involved in decision making.

[单项选择]As unemployment began to ______, it may also have been true that those who were the first to be made redundant or were turned down for work were those who were least efficient.
A. escalate
B. augment
C. enlarge
D. enhance

[单项选择]Fragile though it may seem, straw also has-------, keeping its natural gloss and pliancy for centuries.
A. resilience is extraordinary
B. some extraordinary and resilient
C. that of extraordinarily resilient
D. extraordinary resilience

[单项选择] 有下列两个浓差电池（a1＜a2） （1）Cu（s）│Cu²⁺（a1）‖Cu²⁺（a2）│Cu（s） （2）Pt│Cu²⁺（a1），Cu⁺（a＇）‖Cu²⁺（a2），Cu⁺（a＇）│Pt 它们的电池反应与电动势 E1和E2之间的关系为：（）
A. 电池反应相同，E1=E2
B. 电池反应不同，E1=E2
C. 电池反应相同，E1=2E2
D. 电池反应相同，E2=2E1

[单项选择]Whenever circumstances permitted, they would come and lend us a helping hand.
A. 无论何时环境被许可，他们都会来助我们一臂之力。
B. 无论何时，只要环境许可，他们都将来并且借给我们一只帮助之手。
C. 无论什么环境，只要他们愿意，他们就会来并且借给我们一只帮助之手。
D. 只要情况允许，他们总是来给我们帮忙。

[多项选择]Content filtering enables traffic to be permitted or blocked based on inspection of which three types of content?（）(Choose three.)
A. MIME pattern
B. file extension
C. IP spoofing
D. POP3
E. protocol command

[单项选择]铜电阻有两种，一种是Cu50，另一是Cu100，那么Cu100的电阻比R100/R0是（）。
A. 1
B. 2
C. 1.428

[单项选择]Only once in his life had Douglas permitted himself ______ control of his emotions.
A. to lose
B. lost
C. lose
D. losing

[简答题]已知E^ө（Cu²⁺/Cu⁺）＜E^ө（I₂/I^-），但Cu²⁺能与反应生成I₂和CuI（s），为什么？

[单项选择]Which values are NOT permitted to be part of the primary key
A. alpha-numeric characters
B. punctuation
C. special characters
D. NULL

[单项选择]Unless (they are so permitted) by the attending (physician), no visitors or relatives (can) enter, the (patient's) room

[单项选择]“Permitted speed”的中文含义是：（）。
A. 允许速度
B. 开口速度
C. 目标速度
D. 干预速度