题干

当电场力对电荷做正功时,电荷的移动情况是

A:正电荷一定从电势能小的位置到电势能大的位置;

B:负电荷一定从电势能大的位置到电势能小的位置;

C:一定从电势高位置到电势低位置;

D:一定从电势低位置到电势高位置。

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答案(点此获取答案解析)

B

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    Maui, one of the most beautiful islands in the world, is a dream place for a visit and there are so many attractions for you.

    HALEAKALA

    Mt. Haleakala is 10,023 feet high and is one of the two volcanoes that created this incredible Hawaiian island. Haleakala National Park offers a variety of activities, making it one of the most revisited attractions in all the Hawaiian Islands. The most popular activities include enjoying sunrise and sunset, hiking, and backcountry camping on Maui.

    ROAD TO HANA

    There are many ways to experience the Road to Hana, and the sleepy coastal Town of Hana, Maui. Visitors can go by group and private tours, or explore on their own by renting a vehicle. Beginning at the historic Town of Paia, visitors can enjoy decorated coastlines all the way to Hana, world-famous beaches in Hawaii, tropical landscapes, waterfal.ls, scenic lookout points, and cultural attractions that mark significant points in Maui's unique Hawaiian history.

    HO'OKIPA BEACH PARK

    Ho'okipa Beach Park is one of the most famous beaches in the world for professional surfing and windsurfing. In the ancient Hawaiian language, “ho'okipa” means hospitality, which is exactly what this Beach Park offers! At Ho'okipa, visitors can see the powerful coastline from the top parking lot for amazing photo opportunities. Or you can go to the sand for afternoon BBQ's and the glorious Maui sunshine.

    OHE'O GULCH POOLS

    The Ohe'o Gulch Pools, more commonly referred to as the Seven Sacred Pools, is a wonderful place to explore Maui on vacation. The lower pools are more easily accessed, and perhaps the best choice for visitors who want to jump in. Due to the popularity of the Seven Sacred Pools, it is highly suggested to arrive early for a chance to enjoy privacy in this beautiful location.