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【单选题】
Which of the following would not cause high suction pressure?A.
insufficient refrigeration
B.
leaky suction valves
C.
expansion valve stuck open
D.
suction valve not adjusted properly
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举一反三
【简答题】9 比 5 记作 ( ) , ( ) 是前项, ( ) 是后项,比值是 ( ) 。
【单选题】The net present value of the costs of operating a machine for the next three years is $10,724 at a cost of capital of 15%. What is the equivalent annual cost of operating the machine?
A.
$4,697
B.
$3,575
C.
C $3,109
D.
$4,111
【单选题】The net present value of the costs of operating a machine for the next three years is $10,724 at a cost of capital of 15%. What is the equivalent annual cost of operating the machine?
A.
$4697
B.
$3575
C.
$4111
D.
$3109
【简答题】简述CPU的接口类型和主要性能指标?
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