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【单选题】
为了防止爆燃,应根据发动机压缩比选用相应 ______ 的汽油。A.
正戊烷
B.
辛烷值
C.
十六烷值
D.
异戊烷
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举一反三
【单选题】Push yourself to make friends and to ______ the friendship.
A.
aggravate
B.
push
C.
maitain
D.
heed
【单选题】Guys, push yourself to make more friends and make sure to()the friendships.
A.
mature
B.
contain
C.
contact
D.
maintain
【单选题】A foreign trade company exported 5 metric tons of tea, suffered a storm in the course of sea transportation, and sea water poured into the cabin, resulting in a part of the tea mildew and deterioratio...
A.
Actual Total Loss
B.
Constructive Total Loss
C.
General Average
D.
Particular Average
【单选题】It is important to choose something ________ for yourself and don’t push yourself too much.
A.
outdoor
B.
various
C.
suitable
D.
special
【判断题】主令控制器是按照预定程序换接控制电路接线的主令电器,主要用于电力拖动系统中,按照预定的程序分合触头,向控制系统发出指令,通过接触器达到控制电动机的启动、制动、调速及反转的目的,同时也可实现控制线路的联锁作用。
A.
正确
B.
错误
【简答题】电力驱动与控制系统的其工作过程是根据从制动踏板和加速踏板输入的信号,电子控制器发出相应的控制指令来控制电动机,调节电动机和电源之间的( )。
【单选题】The fourth thing is _______. Push yourself physically and mentally. You have to push through shyness and self-doubt. People always have self-doubts. They would think, “I wasn’t born to do this.” It’s ...
A.
push
B.
passion
C.
focus
D.
service
【单选题】Company A exported 5 metric tons of tea. The tea suffered heavy storm in transit. The sea water in the ship' s hold led to the deterioration in the quality of part of the tea exported. This kind of lo...
A.
actual total loss
B.
constructive total loss
C.
general average
D.
particular average
【单选题】电力驱动与控制系统的其工作过程是根据从制动踏板和加速踏板输入的信号,( )发出相应的控制指令来控制电动机,调节电动机和电源之间的功率流。
A.
变速杆
B.
液压制动
C.
离合器
D.
电子控制器
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