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【判断题】
首站进、出口压力pZ1或pQ1稍有下降，对整条管道系统的输气量都会有较明显的影响。The slight decrease of inlet and outlet pressure pZ1 or pQ1 in the first station will have a more obvious impact on the gas transmission capacity of the whole pipeline system，而输气管的终点压力pZ，即使在较大范围内变化，对整个系统输气量的影响也不大。However, the terminal pressure pZ of the gas pipeline, even if it changes in a large range, has little impact on the gas delivery volume of the whole system.A.
正确
B.
错误
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【单选题】以点 ( 3 ,-4 ) 为圆心,并且过点 (6 , 0 )的圆的方程为
A.
( x - 3 ) ² +( y + 4 ) ²=16
B.
( x - 3 ) ² +( y + 4 ) ²=25
C.
( x + 3 ) ² +( y - 4 ) ²=25
D.
( x + 3 ) ² +( y - 4 ) ²=16
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A.
will be
B.
would be
C.
be
D.
are
【单选题】Why is a “full English breakfast” so called? a Be b Be c Be
A.
a Bcause it contains all the different types of food: bacon, eggs, sausages, etc.
B.
b Bcause it makes your stomach feel full.
C.
c Because you pay full price for it.
【单选题】Let p1 and p2 be pointer variables pointing to the same string, and c be character variables, then the following assignment statement that cannot be executed correctly is ( ).
A.
c=*p1+*p2;
B.
p2=c
C.
p1=p2
D.
c=*p1*(*p2);
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