According to Bas Lansdorp, which of the following is NOT TRUE？
A. For a one-way trip to Mars, all the technology exists.
B. He could not come up with the fund for Mars One.
C. We humans have the rockets to send people to Mars.
D. We humans have the equipment to land on Mars.
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北方渔船上所使用的电解液比重一般为()左右。
A. 1.18
B. 1.28
C. 1.08
D. 1.38
感应电动势的方向可用()判断。
A. 左手定则
B. 左手螺旋定则
C. 右手定则
D. 右手螺旋定则
According to the passage, which of the following statements about the cell phone service at Yellowstone is TRUE？
A. It is limited certain areas in the park.
B. It is available everywhere in the park.
C. It is not available in the park.
D. It is available to visitors at a fee.
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