【单选题】------I have just had my watch repaired. ------How much did they ____ for that?
【单选题】--- Oh, it’s you! I ___________ you. ---- I have just had my hair cut, and I am wearing new glasses.
【简答题】一般对于无水的松散地层,小导管注浆材料宜采用()水泥浆。
【单选题】某化合物的相对分子质量 M r =72, 红外光谱指出 , 该化合物含羰基 , 则该化合物可能的 分子式为( )
D.
C 4 H 8 O 或者 C 3 H 4 O 2
【单选题】关于广播电视中心工艺系统中线缆的布放,为防止电磁噪声干扰,下列线缆布放正确的是( )。
A.
应将音视频信号线和电源线分别放在两侧,控制线居中布放;
B.
应将音视频信号线和控制线分别放在两侧,电源线居中布放;
C.
应将音视频控制线和电源线分别放在两侧,信号线居中布放;
D.
可以将音视频控制线、电源线和信号线随机布放;
【单选题】—I have just had my watch repaired. —How much did they ________ for that? [ ]
【单选题】— I have just had my watch repaired. —How much did they ______ you?