After flexing its mechanical arm and
finding some puzzling chemistry in a patch of Martian soil,the robotic rover
Spirit began investigating the composition of a rock named Adirondack yesterday
with two science instruments and a microscopic camera. Following programmed instructions from flight controllers, the six-wheel rover made several short turns and moved forward about six feet. It stopped within inches of the pyramid-shaped rock, about the size of a football. It was the vehicle’s second maneuver on the Martian surface since landing there on Jan. 3. Scientists at the Jet Propulsion Laboratory in Pasadena, Calif., said they did not expect results of the first rock examination until early today. But they were already both pleased and puzzled over the soil test results. "We’re starting to put together a picture of A. Two. They are the mechanical arm and the microscopic camera. B. Three. They are the two science instruments and a microscopic camera. C. Four. They are the two science instruments, a microscopic camera and the flight controller. D. Five. They are the two science instruments, the two flight controllers and a microscopic camera and the flight controller. [单项选择]After flexing its mechanical arm and finding some puzzling chemistry in a patch of Martian soil,the robotic rover Spirit began investigating the composition of a rock named Adirondack yesterday with two science instruments and a microscopic camera.
Following programmed instructions from flight controllers, the six-wheel rover made several short turns and moved forward about six feet. It stopped within inches of the pyramid-shaped rock, about the size of a football. It was the vehicle’s second maneuver on the Martian surface since landing there on Jan. 3. Scientists at the Jet Propulsion Laboratory in Pasadena, Calif., said they did not expect results of the first rock examination until early today. But they were already both pleased and puzzled over the soil test results. "We’re starting to put together a picture of what the soil at Gusev is really like," Dr. Steven W. Squyres of Cornell, the principal scientist of the mission, said at a news conference in Pasadena. He w A. A Brief Introduction to the Research Work of the Science Team B. The Difference of the Geologists on the Composition of a Rock on Mars C. What Force Stick Together the fine grains of the Gusev Surface D. The Spirit Began to Study the Composition of a Rock on Mars 我来回答: 提交
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