A technician, together with some young workers, （　） working on the design.

A:is B:are C:has D:have

The scariest part of buying a used car is not being completely sure of what condition it’s in. A. car that’s been in a major accident is always a bigger risk, but sellers often try to hide this information. Andrew Bleakley, evaluator-inspector, runs a mobile vehicle inspection service in Montreal. For about $ 80 he will perform a full, unbiased inspection on a used vehicle, In his 10 years as a professional inspector, Bleakley has seen a lot. He warns , "Watch out for dealer demonstration vehicles which are used, not new. They may have been in a collision. " He adds that it is not uncommon in Ontario and Quebec especially for unscrupulous sellers to roll back the odometer or to even disengage it. Bleakley has special tools-to check for this.
Bleakley always recommends hiring an independent technician to inspect the condition of a used car before you buy it. The problem is finding someone qualified to do the inspection, which he says generally doesn’t mean just any mechanic. A. thorough mechanical inspection includes checking the compression, all major systems, including the engine, electrical and charging systems, transmission and drive line, fluids, brakes, suspension, and steering. Essential, too, is an inspection of the car’s body and finally a road test. There are , however, a few things everyone can do before buying a used car:
Do a visual check of the car. Look at the right rear door hinges. If they are very worn, or the door doesn’t close well, the car may have been used as a taxi. Holes in the roof could mean the car was used for deliveries.
Check for oil leaks on the pavement. Note that leaks are not necessarily a significant problem—it depends on the cause.
Don’t assume that new-looking brake and accelerator pedals mean the car hasn’t been driven much. Resellers know people check these details and can buy new pads for around $ 6.
Copy down the vehicle identification number (VIN), a 17-character, combination of numbers and letters, from the vehicle’s dashboard. In Ontario, ask the dealer or seller for the Used Vehicle Information Package. This gives details of previous owners, any outstanding liens on the car, and the fair market value of the vehicle.
"An independent technician" in the first sentence of the second paragraph means ______.

A:a technician who checks a car free of charge B:a technician who learned his trade all by himself C:a technician who works for a particular car-dealer D:a technician who runs his own inspection service

(31)到(35)题使用下列数据表。
“仓库”表 仓库号 所在地
WH2 北京
WH2 上海
WH3 广州
WH4 天津
“职工”表 职工号 仓库号 工资
E1 WH1 2100
E2 WH2 1500
E3 WH3 1350
E4 WH1 1850
E5 WH3 1900
E6 WH1 2000
E7 WH4 1450
E8 WH2 1200
E9 WH1 1600
执行下列SQL语句后，显示查询到的仓库号有( )。
SELECT DISTINCT 仓库号 FROM 职工 WHERE 工资＞=ALL;
(SELECT 工资 FROM 职工 WHERE 仓库号="WH3")

A:WH1 B:WH2 C:WH4 D:WH1、WH3

(31)～(35)题使用下列数据表。
“仓库”表 仓库号 所在地
WH2 北京
WH2 上海
WH3 广州
WH4 天津
“职工”表 职工号 仓库号 工资
E1 WH1 2100
E2 WH2 1500
E3 WH3 1350
E4 WH1 1850
E5 WH3 1900
E6 WH1 2000
E7 WH4 1450
E8 WH2 1200
E9 WH1 1600
执行下列SQL语句后，显示查询到的仓库号有( )。

SELECT DISTINCT 仓库号 FROM 职工 WHERE 工资＞=ALL; (SELECT 工资 FROM 职工 WHERE 仓库号="WH3")

A:WH1 B:WH2 C:WH4 D:WH1、WH3

以下各题使用下列数据表。
“仓库”表 仓库号 所在地
WH2 北京
WH2 上海
WH3 广州
WH4 天津
“职工”表 职工号 仓库号 工资
E1 WH1 2100
E2 WH2 1500
E3 WH3 1350
E4 WH1 1850
E5 WH3 1900
E6 WH1 2000
E7 WH4 1450
E8 WH2 1200
E9 WH1 1600
执行下列SQL语句后，显示查询到的仓库号有( )。
SELECT DISTINCT 仓库号 FROM 职工 WHERE 工资＞=ALL
(SELECT 工资 FROM 职工 WHERE 仓库号="WH3")

A:WH1 B:WH2 C:WH4 D:WH1、WH3

第(31)到(35)题见表3-1、表3-2： 表3-1“仓库”表 表3-2 “职工”表SQL语句SELECT DISTINCT 仓库号 FROM 职工 WHERE 工资＞=ALL； (SELECT 工资 FROM 职工 WHERE 仓库号=“WH3”)执行语句后，显示的查询到的仓库号有( )。

A:WH1 B:WH2 C:WH4 D:WH1、WH3

执行下列SQL语句后，显示查询到的仓库号有( )。 SELECT DISTINCT 仓库号 FROM 职工 WHERE 工资＞=ALL; (SELECT 工资 FROM 职工 WHERE 仓库号="WH3")

A:WH1 B:WH2 C:WH4 D:WH1、WH3

执行下列SQL语句后，显示查询到的仓库号有( )。 SELECT DISTINCT 仓库号 FROM 职工 WHERE 工资＞=ALL； (SELECT 工资 FROM 职工 WHERE 仓库号=“WH3”)

A:WH1 B:WH2 C:WH4 D:WH1、WH3

执行下列SQL语句后，显示查询到的仓库号有( )。 SELECT DISTINCT 仓库号 FROM 职工 WHERE 工资＞=ALL; (SELECT 工资 FROM 职工 WHERE 仓库号="WH3")

A:WH1 B:WH2 C:WH4 D:WH1、WH3