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【单选题】Escaping from the EarthThe Earth has a force that pulls things toward itself．We call this force gravity(地心引力)．This is something we live with all the time, and we take it for granted and hardly ever th...
A.
To travel as fast as it can.
B.
To overcome the Earth gravity.
C.
To get away from the air resistance.
D.
To have strong power in its operation.
【单选题】肌丝滑行的理论的直接证据是骨骼肌收缩时（）
A.
明带和H带缩短，暗带长度不变
B.
明带缩短，暗带和H带长度不变
C.
暗带长度缩短，明带和H带不变
D.
明带、暗带和H带长度均缩短
E.
明带、暗带和H带长度均不变
【单选题】航空器夜间滑行（牵引）时，必须（）。
A.
打开航行灯和滑行灯，用慢速滑行
B.
在引导车的引导下滑行
C.
用慢车速度滑行
相关题目：
【单选题】Escaping from the EarthThe Earth has a force that pulls things toward itself．We call this force gravity(地心引力)．This is something we live with all the time, and we take it for granted and hardly ever th...
A.
To travel as fast as it can.
B.
To overcome the Earth gravity.
C.
To get away from the air resistance.
D.
To have strong power in its operation.
【单选题】肌丝滑行的理论的直接证据是骨骼肌收缩时（）
A.
明带和H带缩短，暗带长度不变
B.
明带缩短，暗带和H带长度不变
C.
暗带长度缩短，明带和H带不变
D.
明带、暗带和H带长度均缩短
E.
明带、暗带和H带长度均不变
【单选题】航空器夜间滑行（牵引）时，必须（）。
A.
打开航行灯和滑行灯，用慢速滑行
B.
在引导车的引导下滑行
C.
用慢车速度滑行
参考解析：
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