某点用测压管测得高度如图6-9所示,液体为水,环境大气压98kPa则该点的压力真空值应为()kPa。
A.90.16
B.7.84
C.78.4
D.9.2
参考答案:B
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西太平洋副热带高压三次北跳分别对应我国华南()、()和()。