岸坡结构采用板桩时,锚碇结构回填顺序应符合设计要求。回填时首先应回填()的区域。
A.板桩结构前
B.板桩结构后
C.锚碇结构前
D.锚碇结构后
参考答案:C
--- What do you think of the lecture of Li Yang’s Crazy English?
--- I think it’s _______ , but someone thinks it’s much too ________.
A.wonderful enough; bored
B.enough wonderful; boring
C.wonderful enough; boring
D.enough wonderful; bored
证明DNA是遗传物质的实验中,赫尔希和蔡斯分别用32P和35S标记噬菌体,请在下图中指出标记元素所在的部位依次是()
A.①④
B.②④
C.①⑤
D.③⑤