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【单选题】
A car is made up of more than 30,000parts. Each part in a new car is as weak as a baby. So a new car requires proper care and servicing. If you’re unfamiliar with the parts, you have to read through the owner’s instructions carefully. First of all, the brakes (刹车) of your car are important for safety (安全) reasons. Having them checked regularly can reduce the risks of accidents. Another important thing to consider is engine care. Always remember that the life and performance of your car engine depend on the engine oil. Replace the engine oil when recommended. If you feel the engine is very hot especially during summer it is probably because the cooling system doesn’t work well. You’d better get the cooling system serviced before the start of summer. In a word, timely and proper servicing is an important task for car owners. Good servicing can not only extent the life of your newborn baby, but also ensure your safety, and the safety of those who share the road with you.
A.
It is recommended to have the cooling system checked when ________. you buy a new car
B.
summer is coming
C.
the engine oil is replaced
D.
the brakes are out of order
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【单选题】When people are travelling to Canada or Mexico, a passport is a must for ______.
A.
American citizens
B.
Japanese citizens
C.
Mexican citizens
D.
Canadian citizens
【判断题】最现实、最热烈的招聘方式是现场招聘会。
A.
正确
B.
错误
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A.
18.40万元
B.
33.25万元
C.
36.80万元
D.
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A.
Ⅰ期内痔
B.
Ⅱ期内痔
C.
Ⅲ期内痔
D.
Ⅳ期内痔
E.
血栓性外痔
【判断题】u=x, v=-y, w=0表示的流场为定常流场。
A.
正确
B.
错误
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A.
正确
B.
错误
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A.
等于系统阶次n。
B.
等于系统输入变量的个数。
C.
等于系统状态变量中变量的个数。
D.
等于系统输出变量的个数。
【单选题】Tom! You're wanted ______the phone.
A.
in
B.
by
C.
on
D.
from
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