The key technologies for shale gas extraction include（）
Anisotropic physical mechanics properties of shales
B. Fracture dynamics and fracking control of shales
C. Strain sensitivity and multiscale mechanism of gaspenetration
D. Interaction between drill and shale gas
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Who have ever been the presidents of CSTAM（）
A. Hsue-shen Tsien
B. Che-min Cheng
C. Ling-Hi Tsien
D. Wei-zang Chien
”Mozi” and “Wu Kong” are the satallites for and , respectively（）
A. quantum communication, dark matter detection
B. dark matter detection, quantum communication
C. quantum communication, gravitational wave measurement
D. dark matter detection, gravitational wave measurement
The idea of waveriders for hypersonic aircrafts was proposed by（）
A. Hsue-shen Tsien
B. Wei-zang Chien
C. Theodore von Kármán
D. Ludwig Prandtl
以下关于JDBC的描述错误的是（）
A. JDBC是一种用于执行SQL语句的Java API
B. JDBC API既支持数据库访问的两层模型，也支持3层模型
C. JDBC由一组用Java编程语言编写的类和接口组成
D. 使用JDBC只能连接SQL Server数据库
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