A vessel has an amidships superstructure. Which location would be most suitable for on-deck stowage of automobiles?().
A. On top of No.1 hatch
Beside the hatches,forward of the midships house
C. On top of the hatch immediately forward of the midships house
D. On top of the hatch immediately aft of the midships house
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某水电工程坐落在河谷狭窄的山区河段,设计采用全段围堰法导流,此工程宜采用()导流。
A. 束窄河床
B. 明渠
C. 涵管
D. 隧洞
()代表着中国几何学的顶峰。
A. 《周髀算经》
B. 勾股定理
C. π精确到小数点后七位
D. 球体积公式