题目内容：
To balance a bigger turbine high on a flatting spar, a new type of turbine is to be designed with its gearbox sitting __________.A. on the sea floor
B. on the spar top
C. at sea level
D. behind the blades
参考答案：
答案解析：
单选题：To balance a bigger turbine high on a flatting spar, a new t
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A. on the sea floor
B. on the spar top
C. at sea level
D. behind the blades