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【单选题】
The discovery of dinosaur fossil sites in Bolivia is exciting because of the following reasons EXCEPT thatA.
they are found in a continent other than Asia and North Continent.
B.
the largest dinosaurs in the world are found in this discovery.
C.
there are some unknown species of dinosaurs found this time.
D.
the dinosaurs were believed to be some of the last ones on earth.
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反馈参考答案：
举一反三
【单选题】一个线圈接到100V的直流电源上,消耗的功率为2.5kW。当该线圈接到100V、50Hz的交流电源上,消耗的功率为1.6kW。则该线圈的电感量L=()
A.
0.01H
B.
0.05H
C.
0.25H
D.
0.03H
【单选题】用 BaSO 4 重量法测定煤中 S 的含量,洗涤沉淀的洗涤剂应选择
A.
稀 H 2 SO 4
B.
稀 BaCl 2
C.
H 2 O+NH 4 Cl
D.
H 2 O
参考解析：
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