“三角对应相等的两个三角形全等”的逆命题是（ ）；这个命题是（ ）命题，它的逆命题是（ ）命题（填“真”、“假”）。
两个全等三角形的三角对应相等；假；真
In the following essay, each blank has four choices. Choose the best answer and write down on the answer sheet. Microwave communication uses high-frequency (26) waves that travel in straightlines through the air. Because the waves cannot (27) with the curvature of the earth, they can be (28) only over short distance. Thus, microwave is a good (29) for sendingdata between buildings in a city or on a large college campus. For longer distances, the waves must be relayed by means of "dishes" or (30) . These can be installed on towers, high buildings, and mountain tops.
A．transmitted
B．transformed
C．converted
D．delivered
证券公司应当按照上一年营业费用总额的( )来计算营运风险的风险准备。
A．5%
B．10%
C．20%
D．25%
