2500+子架IU2板位到交叉板的VC4总线数量是（）。
A.1个VC4
B.2个VC4
C.4个VC4
D.8个VC4
参考答案：C
与产后出血无关的是（）
A.子宫畸瘤合并妊娠
B.滞产
C.双胎
D.多次刮宫
E.早产
19.—My home is in that tall building over there.
— ?
A．Can it see
B．Can see it
C．Can be seen it
D．Can it be seen
