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【单选题】
关于推杆的描述，哪句话是错误的。A.
下置凸轮轴顶置式气门需要使用推杆传递动力。
B.
有了推杆就不需要了。
C.
有推杆的配气机构一定会有摇臂。
D.
带传动和链传动的配气机构不需要推杆。
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举一反三
【单选题】Before attempting to put out a class "C" fire involving an electrical driven centrifugal pump, you should FIRST____.
A.
insulate your shoes
B.
ground the fire hose
C.
secure its power supply
D.
start the fire pump
【单选题】以下能正确定义字符串的语句是（ ）。
A.
char str=”＼x43”；
B.
char str[]=”、0”；
C.
char str=”；
D.
char str[]={’＼064’}；
【单选题】Before attempting to put out a class “C” fire involving an electric-driven centrifugal pump, you should FIRST _____.
A.
insulate your shoes
B.
ground the fire hose
C.
secure its power supply
D.
start the fire pump
【简答题】巨血小板综合征 (giant platelet syndrome)
【单选题】Students are often advised to look at the first and last____ of a book before attempting to read it in detail.
A.
headings
B.
chapters
C.
titles
【简答题】If you see a person collapsed who is in contact with electricity what is the first thing you must do before attempting to switch off the supply?
【单选题】以下能正确定义字符串的语句是( )。
A.
char str[]={'/064'};
B.
char str='/x43';
C.
char str=';
D.
char str[]='/0';
【判断题】Except while taxiing very slowly, it is best to accelerate before attempting a turn. Very sharp turns or attempting to turn as both tend to exert excessive strains on the airplane, and such turns are ...
A.
正确
B.
错误
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