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【单选题】
下列哪种类型的心脏病合并妊娠发病率最高A.
先天性心脏病
B.
妊高征心脏病
C.
贫血性心脏病
D.
围产期心脏病
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【单选题】China won Olyrnpic gold in the women's short track 3000 metres relay on Wednesday, with Canada _____ the silver. [ ]
A.
picking up
B.
taking up
C.
looking up
D.
bringing up
【单选题】Could I have some milk, some orange juice, and some eggs
A.
instead of
B.
in addition
C.
as well
D.
so much
【简答题】现代化的燃气输配系统是复杂的综合设施,一般由 、 、 、 以及 和 等共同组成。
【单选题】______ he told us is the news ______ China has got 32 gold medals in this important games, ______ of course, made us feel very excited.
A.
What; which; which
B.
That; that; which
C.
What; that; which
D.
That; that; what
【单选题】有关并联比较型ADC 的说法不正确的是 。
A.
在现有的 ADC 中转换速度最快
B.
可直接输入模拟电压信号
C.
一般电路复杂度很低
D.
转换精度与 V REF 的稳定度有关
【简答题】左 5 × 7 r2 + 5 r2 × 左 5 = 左 5 ×（ 7 r2 + 5 r2 ），这里运用了______律进行简便运算．
【单选题】____is known to us is that China has won five gold medals in the 2010 Winter Olympic Games.
A.
It
B.
As
C.
What
D.
That
【简答题】电路如题图E1—20(a)所示，已知：IS1=2 A，IS2=4 A，EI1=8 V，EI2=5 V，EI3=6 V，RI1=2Ω，RI2=4Ω，RI3=6Ω，RI4=8Ω，RI5=10Ω，求各电源的输出功率。
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