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【单选题】
汽油发动机的基本机构组成包括:A.
曲柄连杆机构，配给机构和燃油供给系，启动系，点火系，润滑系，冷却系
B.
曲柄连杆机构，正时机构和燃油供给系，启动系，点火系，润滑系，冷却系
C.
曲柄连杆机构，配给机构和喷射控制系，启动系，点火系，润滑系，冷却系
D.
曲柄连杆机构，正时机构和喷射控制系，启动系，点火系，润滑系，冷却系
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】The author tells us that to communicate effectively, we must understand ______.
A.
our audience and the situation we are in
B.
the target language and facial expressions
C.
both sign languages and verbal languages
D.
the most direct way to deliver a message
【多选题】We communicate our meanings by ____.
A.
functions
B.
grammar
C.
vocabulary
D.
discuouse
E.
skills
【单选题】We can consider our children under stress when they ______.
A.
are unable to communicate their feelings accurately
B.
have trouble communicating their responses to events
C.
often feel abdominal pain without a known reason
D.
have a poor and overcrowded family
【单选题】M: I want to send this parcel to France, What's the postage? W:Let's weight it first. Three pounds and a half. What's in it? M: A present fro a friend. Who is the man talking to?
A.
A friend.
B.
A driver.
C.
A teacher.
D.
A clerk.
【单选题】In our society, we must communicate with other people. A great deal of communicating is performed on a person-to person【C1】______ by the simple means of speech. If we travel in buses, stand in footbal...
A.
basis
B.
base
C.
foundation
D.
ground
【单选题】In our society, we must communicate with other people. A great deal of communication is performed on a person-to-person basis by the simple means of speech. If we travel in buses or stand in football ...
A.
primary
B.
secondary
C.
auxiliary
D.
optional
【单选题】In our society, we must communicate with other people. A great deal of communicating is performed on a person-to-person【C1】______ by the simple means of speech. If we travel in buses, stand in footbal...
A.
basis
B.
base
C.
foundation
D.
ground
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